SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549

                                ----------------

                                 SCHEDULE 13D
                                (Rule 13d-101)

            INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
           TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO
                                 RULE 13d-2(a)

                             (Amendment No. 4)(1)


                           Host Marriott Corporation
--------------------------------------------------------------------------------
                               (Name of Issuer)


                    Common Stock, par value $.01 per share
--------------------------------------------------------------------------------
                        (Title of Class of Securities)


                                  44107P104
--------------------------------------------------------------------------------
                                (CUSIP Number)

                               Thomas J. Saylak
                    Blackstone Real Estate Associates L.P.
                         345 Park Avenue, 31st Floor
                           New York, New York 10154
                                (212) 935-2626

                               With a copy to:

                             Gregory Ressa, Esq.
                          Simpson Thacher & Bartlett
                             425 Lexington Avenue
                           New York, New York 10017
                                (212) 455-2000

--------------------------------------------------------------------------------
                 (Name, Address and Telephone Number of Person
               Authorized to Receive Notices and Communications)

                                 May 8, 2001

--------------------------------------------------------------------------------
             (Date of Event which Requires Filing of this Statement)

     If the filing person has previously filed a statement on Schedule 13G to
report the acquisition that is the subject of this Schedule 13D, and is filing
this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the
following box [_].


          Note: Schedules filed in paper format shall include a signed
     original and five copies of the schedule, including all exhibits. See
     Rule 13d-7 for other parties to whom copies are to be sent.

                         (Continued on following pages)
                               (Page 1 of 36 pages)

----------
(1)  The remainder of this cover page shall be filled out for a reporting
     person's initial filing on this form with respect to the subject class of
     securities, and for any subsequent amendment containing information which
     would alter disclosures provided in a prior cover page.

     The information required on the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).






CUSIP No. 44107P104                     13D                   Page 2 of 36


--------------------------------------------------------------------------------
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

     Blackstone Real Estate Partners II L.P.
     I.R.S. Identification No. - 13-3930073

--------------------------------------------------------------------------------
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

--------------------------------------------------------------------------------
(3)  SEC USE ONLY



--------------------------------------------------------------------------------
(4)  SOURCE OF FUNDS*


     00
--------------------------------------------------------------------------------
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



--------------------------------------------------------------------------------
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     Delaware
--------------------------------------------------------------------------------
               (7)  SOLE VOTING POWER

  NUMBER OF
                    6,641,942
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    468,470
  OWNED BY
               -----------------------------------------------------------------
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    6,641,942
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    468,470
--------------------------------------------------------------------------------
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     7,110,412
--------------------------------------------------------------------------------
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

--------------------------------------------------------------------------------
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     2.7%
--------------------------------------------------------------------------------
(14) TYPE OF REPORTING PERSON*


     PN
--------------------------------------------------------------------------------
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104                   13D                 Page 3 of 36



--------------------------------------------------------------------------------
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

     Blackstone Real Estate Holdings II L.P.
     I.R.S. Identification No. - 13-3916108

--------------------------------------------------------------------------------
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

--------------------------------------------------------------------------------
(3)  SEC USE ONLY



--------------------------------------------------------------------------------
(4)  SOURCE OF FUNDS*


     00
--------------------------------------------------------------------------------
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



--------------------------------------------------------------------------------
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     Delaware
--------------------------------------------------------------------------------
               (7)  SOLE VOTING POWER

  NUMBER OF
                    2,042,673
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    468,470
  OWNED BY
               -----------------------------------------------------------------
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    2,042,673
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    468,470
--------------------------------------------------------------------------------
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     2,511,143
--------------------------------------------------------------------------------
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

--------------------------------------------------------------------------------
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     0.95%
--------------------------------------------------------------------------------
(14) TYPE OF REPORTING PERSON*


     PN
--------------------------------------------------------------------------------
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104                  13D                   Page 4 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

     Blackstone Real Estate Partners II.TE.1 L.P.
     I.R.S. Identification No. - 13-3915147

________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*


     00
________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     Delaware
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    4,990,565
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    468,470
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    4,990,565
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    468,470
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     5,459,035
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     2.1%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*


     PN
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104             13D                   Page 5 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

     Blackstone Real Estate Partners II.TE.2 L.P.
     I.R.S. Identification No. - 13-3915149

________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*


     00
_______________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     Delaware
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    214,596
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    468,470
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    214,596
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    468,470
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     683,066
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     0.3%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*


     PN
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104                13D                   Page 6 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)


     Blackstone Real Estate Partners II.TE.3 L.P.
     I.R.S. Identification No. - 13-3943180
________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*


     00
________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     Delaware
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    1,025,959
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    468,470
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    1,025,959
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    468,470
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     1,494,429
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     0.6%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*


     PN
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT





CUSIP No. 44107P104               13D                   Page 7 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

     Blackstone Real Estate Partners II.TE.4 L.P.
     I.R.S. Identification No. - 13-3943181

________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*


     00
________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     Delaware
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    208,693
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    468,470
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    208,693
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    468,470
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     677,163
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     0.3%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*


     PN
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104                   13D                   Page 8 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

     Blackstone Real Estate Partners II.TE.5 L.P.
     I.R.S. Identification No. - 13-3973673

________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*


     00
________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     Delaware
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    438,980
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    468,470
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    438,980
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    468,470
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     907,450
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     0.3%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*


     PN
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT





CUSIP No. 44107P104                  13D                   Page 9 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

     Blackstone Real Estate Partners I L.P.
     I.R.S. Identification No. - 13-3930073

________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*


     00
________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     Delaware
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    1,934,258
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    468,470
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    1,934,258
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    468,470
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     2,402,728
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     0.9%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*


     PN
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104               13D                   Page 10 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

     Blackstone Real Estate Partners Two L.P.
     I.R.S. Identification No. - 13-3787414

________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*


     00
________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     Delaware
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    126,834
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    468,470
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    126,834
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH
                    468,470

________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     595,304
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     0.2%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*


     PN
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104                   13D                   Page 11 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

     Blackstone Real Estate Partners Three L.P.
     I.R.S. Identification No. - 13-3787415

________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*


     00
________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     Delaware
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    1,230,545
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    468,470
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    1,230,545
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    468,470
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     1,699,015
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     0.6%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*


     PN
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104                     13D                Page 12 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

     Blackstone Real Estate Partners IV L.P.
     I.R.S. Identification No. - 13-3787416

________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*


     00
________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     Delaware
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    38,684
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    468,470
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    38,684
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    468,470
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     507,154
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     0.2%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*

     PN

________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104                    13D                 Page 13 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)


     Blackstone RE Capital Partners L.P.
     I.R.S. Identification No. - 13-3794146
________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*


     00
________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     Delaware
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    201,766
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    468,470
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    201,766
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    468,470
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     670,236
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     0.25%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*


     PN
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104                  13D                   Page 14 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

     Blackstone RE Capital Partners II L.P.
     I.R.S. Identification No. - 13-3794148

________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*


     00
________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     Delaware
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    22,146
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    468,470
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    22,146
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    468,470
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     490,616
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     0.2%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*


     PN
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104                  13D                   Page 15 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)


     Blackstone RE Offshore Capital Partners L.P.
     I.R.S. Identification No. - 13-3794149
________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*


     00
________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     Delaware
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    38,965
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    468,470
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    38,965
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    468,470
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     507,435
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     0.2%

________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*


     PN
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104                  13D                   Page 16 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)


     Blackstone Real Estate Holdings L.P.
     I.R.S. Identification No. - 13-3789506
________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*


     00
________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     Delaware
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    1,349,205
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    468,470
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    1,349,205
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    468,470
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     1,817,675
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     0.7%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*


     PN
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104                  13D                   Page 17 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

     CR/RE L.L.C.

________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*


     00
________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     Delaware
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    27,078
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    468,470
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    27,078
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    468,470
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     495,548
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     0.2%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*


     00
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104                 13D                   Page 18 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

     BRE Logan Hotel Inc.
     I.R.S. Identification No. - 13-3731847

________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*


     00
________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     Delaware
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    14,362
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    None
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    14,362
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    None
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     14,362
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     Less than 0.1%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*


     CO
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104                   13D                   Page 19 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)


     BRE/Ceriale L.L.C.
________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*


     OO
________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     Delaware
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    468,470
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    None
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    468,470
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    None
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     468,370
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     0.2%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*

     00
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104                  13D                   Page 20 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

     RTZ Management Corp.

________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*

     00

________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     Delaware
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    14
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    None
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    14
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    None
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     14
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     Less than 0.1%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*


     CO
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104               13D                   Page 21 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)


     Blackstone Real Estate Associates L.P.
________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*


     00
________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     Delaware
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    None
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    4,061,668
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    None
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    4,061,668
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     4,061,668
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     1.5%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*


     PN
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104                 13D                   Page 22 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)


     Blackstone Real Estate Associates II L.P.
________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*


     Not Applicable
________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     Delaware
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    None
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    13,989,205
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    None
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    13,989,205
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     13,989,205
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     5.3%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*


     PN
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104                  13D                   Page 23 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)


     Blackstone Real Estate Management II L.P.
________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*


     Not Applicable
________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     Delaware
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    None
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    16,031,878
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    None
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    16,031,878
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     16,031,878
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     6.05%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*


     PN
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104                 13D                   Page 24 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)


     BREA L.L.C.
________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*

     Not Applicable

________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION

     Delaware

________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    None
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    5,410,873
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    None
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    5,410,873
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     5,410,873
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     2.0%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*


     OO
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104                   13D                   Page 25 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

     BREA II L.L.C.

________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*


     Not Applicable
________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     Delaware
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    None
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    16,031,878
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    None
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    16,031,878
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     16,031,878
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     6.05%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*


     OO
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104                   13D                   Page 26 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

     Peter G. Peterson

________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*


     Not Applicable
________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     U.S.
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    None
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    20,988,657
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    None
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    20,988,657
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     20,988,657
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     7.9%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*


     IN
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104                    13D                  Page 27 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

     Stephen A. Schwarzman

________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*


     Not Applicable
________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     U.S.
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    None
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    20,988,657
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    None
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    20,988,657
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     20,988,657
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     7.9%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*


     IN
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104                13D                   Page 28 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)


     John G. Schreiber
________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*


     Not Applicable
________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     U.S.
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    None
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    None
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    None
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    17,582,403
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     17,582,403
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     6.6%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*


     IN
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104                   13D                   Page 29 of 36


________________________________________________________________________________
(1)  NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)


     John Ceriale
________________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [x]

________________________________________________________________________________
(3)  SEC USE ONLY



________________________________________________________________________________
(4)  SOURCE OF FUNDS*

     Not Applicable

________________________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION


     U.S.
________________________________________________________________________________
               (7)  SOLE VOTING POWER

  NUMBER OF
                    27,078
   SHARES      _________________________________________________________________
               (8)  SHARED VOTING POWER
BENEFICIALLY
                    468,470
  OWNED BY
               _________________________________________________________________
    EACH       (9)  SOLE DISPOSITIVE POWER

  REPORTING
                    27,078
   PERSON      _________________________________________________________________
               (10) SHARED DISPOSITIVE POWER
    WITH

                    468,470
________________________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     495,548
________________________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)


     0.2%
________________________________________________________________________________
(14) TYPE OF REPORTING PERSON*


     IN
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT




CUSIP No. 44107P104                     13D                  Page 30 of 36


                                AMENDMENT NO. 4

     The Statement on Schedule 13D relating to the Common Stock, par value
$.01 per share (the "Common Stock") of Host Marriott Corporation, a Maryland
corporation (the "Issuer") initially filed on May 13, 1999, as amended (the
"Schedule 13D"), by Blackstone Real Estate Partners II L.P. ("BRE II");
Blackstone Real Estate Holdings II L.P. ("BREH II"); Blackstone Real Estate
Partners II T.E. 1 L.P. ("BRE II TE 1"); Blackstone Real Estate Partners II
T.E. 2 L.P. ("BRE II TE 2"); Blackstone Real Estate Partners II T.E. 3 L.P.
("BRE II TE 3"); Blackstone Real Estate Partners II T.E. 4 L.P. ("BRE II TE
4"); Blackstone Real Estate Partners II T.E. 5 L.P. ("BRE II TE 5");
Blackstone Real Estate Partners I L.P. ("BRE I"); Blackstone Real Estate
Partners Two L.P. ("BRE Two"); Blackstone Real Estate Partners Three L.P.
("BRE Three"); Blackstone Real Estate Partners IV L.P. ("BRE IV"); Blackstone
RE Capital Partners L.P. ("BRECP"); Blackstone RE Capital Partners II L.P.
("BRECP II"); Blackstone RE Offshore Capital Partners L.P. ("BOC"); Blackstone
Real Estate Holdings L.P. ("BREH"); CR/RE L.L.C. ("CRRE"); BRE/Ceriale L.L.C.
("BRE/Ceriale"); RTZ Management Corp. ("RTZ"); BRE Logan Hotel Inc. ("Logan");
Blackstone Real Estate Associates L.P. ("BREA"); Blackstone Real Estate
Associates II L.P. ("BREA II"); Blackstone Real Estate Management Associates
II L.P. ("BREMA II"); BREA L.L.C. ("BREA LLC"); ("BREA II LLC"); Peter G.
Peterson ("Peterson"); Stephen A. Schwarzman ("Schwarzman"); John G. Schreiber
("Schreiber"); and John Ceriale ("Ceriale"), is hereby amended as set forth
herein. Responses to each item below may be incorporated by reference into
each other item, as applicable. Capitalized terms used herein but not defined
shall have the meanings set forth in the Schedule 13D.

Item 5.  Interest in Securities of the Issuer.

     Item 5 is hereby deleted in its entirety and replaced by the following
text:

     As of the date of this filing, the Reporting Persons own, in the
aggregate, 21,015,735 OP Units, which are redeemable for cash (or at the
Issuer's election, exchangeable for Common Stock on a one-for-one basis).
Notwithstanding the foregoing, this Item 5 discloses the aggregate number of
Common Stock that the Reporting Persons may be deemed beneficially to own due
to their right to redeem OP Units.

     As of the date of this filing, BRE II, BREH II, BRE II TE 1, BRE II TE 2,
BRE II TE 3, BRE II TE 4 and BRE II TE 5 may be deemed to beneficially own
6,641,942 (or approximately 2.5% of the outstanding shares of Common Stock;
all percentages herein are based on the total number of shares of Common Stock
outstanding as reported in the Issuer's most recently filed Schedule 14A filed
on April 12, 2001, based upon best available information as of the date
hereof), 2,042,673 (0.8%), 4,990,565 (1.9%), 214,596 (less than 0.1%),
1,025,959 (0.4%), 208,693 (less than 0.1%) and 438,980 (0.2%) shares of Common
Stock, respectively. As of the date of this filing, BRE I, BRE Two, BRE Three,
BRE IV, BRECP, BRECP II, BOC and BREH may be deemed to beneficially own
1,934,258 (0.7%), 126,834 (less than 0.1%), 1,230,545 (0.5%), 38,684 (less
than 0.1%), 201,766 (less than 0.1%), 22,146 (less than 0.1%), 38,965 (less
than 0.1%) and 1,349,205 (0.5 %) shares of Common Stock, respectively. As of
the date of this filing, CRRE, Logan, Ceriale and RTZ may be deemed to
beneficially own 27,078 (less than 0.1%), 14,362 (less than 0.1%), 468,470
(0.2%) and 14 (less than 0.1%) shares of Common Stock, respectively.



CUSIP No. 44107P104                     13D                  Page 31 of 36

     Such shares of Common Stock represent, in the aggregate, 21,015,575
shares of Common Stock, or approximately 7.9% of the total number of shares of
Common Stock outstanding as reported in the Issuer's most recently filed
Schedule 14A filed on April 12, 2001. As of the date of this filing, each of
the above-mentioned Reporting Persons, acting through each of their respective
direct or indirect general partners and members, has the sole power to vote or
direct the vote and to dispose or direct the disposition (subject to the
provisions of the Contribution Agreement and the Partnership Agreement) of the
above mentioned shares of Common Stock beneficially owned by each such
Reporting Person.

     In addition, by reason of their status as members of Ceriale, BRE I, BRE
Two, BRE Three, BRE IV, BRECP, BRECP II, BOC, BREH, BRE II, BREH II, BRE II TE
1, BRE II TE 2, BRE II TE 3, BRE II TE 4, BRE II TE 5 and CRRE may be deemed
to beneficially own the 468,470 (0.2%) shares of Common Stock beneficially
owned by Ceriale. As of the date of this filing, BRE I, BRE Two, BRE Three,
BRE IV, BRECP, BRECP II, BOC, BREH, BRE II, BREH II, BRE II TE 1, BRE II TE 2,
BRE II TE 3, BRE II TE 4, BRE II TE 5 and CRRE have the shared power to vote
or direct the vote and to dispose or direct the disposition (subject to the
provisions of the Contribution Agreement and the Partnership Agreement) of the
shares of Common Stock beneficially owned by Ceriale.

     By reason of its status as the general partner of BRE I, BRE Two, BRE
Three, BRE IV, BRECP, BRECP II and BOC, BREA has the shared power to vote or
direct the vote and to dispose or direct the disposition of the shares of
Common Stock owned by such entities (in each case to the extent that BRE I,
BRE Two, BRE Three, BRE IV, BRECP, BRECP II and BOC have such power) and,
accordingly, may be deemed to beneficially own 4,061,668 (1.5%) shares of
Common Stock.

     By reason of its status as the general partner of BRE II, BRE II TE 1,
BRE II TE 2, BRE II TE 3, BRE II TE 4, BRE II TE 5, BREA II has the shared
power to vote or direct the vote and to dispose or direct the disposition of
shares of Common Stock owned by such entities (in each case to the extent that
BRE II, BRE II TE 1, BRE II TE 2, BRE II TE 3, BRE II TE 4, BRE II TE 5, have
such power) and, accordingly, may be deemed to beneficially own 13,989,205
(5.3%) shares of Common Stock.

     By reason of the requirement that any disposition of an investment
(directly or indirectly) by entities to which BREA and BREA II serves as
general partner requires the approval of Schreiber, Schreiber has shared power
to dispose or direct the disposition of the shares of Common Stock that may be
deemed to be beneficially owned by BREA and BREA II (in each case to the
extent that BREA and BREA II has such power) and, accordingly, may be deemed
to beneficially own 17,582,403 (6.6%) shares of Common Stock which may be
deemed to be beneficially owned by BREA and BREA II.

     By reason of its status as the general partner of BREA and BREH, BREA LLC
has the shared power to vote or direct the vote and to dispose or direct the
disposition of the shares of Common Stock that may be deemed to be
beneficially owned by BREA and BREH (in each case to the extent that the BREA
and BREH have such power) and, accordingly, may be deemed to beneficially own
5,410,873 (2.0%) shares of Common Stock.



CUSIP No. 44107P104                     13D                  Page 32 of 36


     By reason of its status as the general partner of BREA II and BREH II,
BREMA II has the shared power to vote or direct the vote and to dispose or
direct the disposition of the shares of Common Stock that may be deemed to be
beneficially owned by BREA II and BREH II (in each case to the extent that the
BREA II and BREH II have such power) and, accordingly, may be deemed to
beneficially own 16,031,878 (6.05%) shares of Common Stock.

     By reason of its status as the general partner of BREMA II, BREA II LLC
has the shared power to vote or direct the vote and to dispose or direct the
disposition of the shares of Common Stock that may be deemed to be
beneficially owned by BREA II and BREH II (in each case to the extent that the
BREA II and BREH II have such power) and, accordingly, may be deemed to
beneficially own 16,031,878 (6.05%) shares of Common Stock.

     By reason of their ability to control BREA LLC, BREA II LLC, RTZ and
Logan, Peterson and Schwarzman have shared power to vote or to direct the vote
and to dispose or direct the disposition of the shares of Common Stock that
may be deemed to be beneficially owned by BREA LLC, BREA II LLC, RTZ and Logan
(in each case to the extent that BREA LLC, BREA II LLC, RTZ and Logan have
such power) and, accordingly, may be deemed to beneficially own 20,988,657
(7.9%) shares of Common Stock.

     By reason of his status as a member with sole beneficial ownership of
CRRE, Ceriale may be deemed to beneficially own, in the aggregate, the 495,548
(0.2%) shares of Common Stock beneficially owned by CRRE. As of the date of
this filing, Ceriale has the sole and shared power to vote or direct the vote
and to dispose or direct the disposition (subject to the provisions of the
Contribution Agreement and the Partnership Agreement) of the shares of Common
Stock beneficially owned by CRRE.

     To the best knowledge of each of the Reporting Persons, none of the
Reporting Persons has beneficial ownership of, or has engaged in any
transaction during the past 60 days in, any shares of Common Stock, except as
otherwise disclosed herein.

     Pursuant to Rule 13d-4 under the Securities Exchange Act of 1934, as
amended (the "Act"), the Reporting Persons declare that the filing of this
statement shall not be construed as an admission that any such Reporting
Person is, for the purposes of Section 13(d) or 13(g) of the Act, the
beneficial owner of any securities covered by this statement.

Item 6. Contracts, Arrangements, Understandings or Relationships with Respect
to Securities of the Issuer.

     Item 6 is hereby supplemented as follows:

     Pursuant to the Underwriting Agreement (the "Underwriting Agreement"),
dated as of May 2, 2001, among the Issuer, Salomon Smith Barney Inc.
("Salomon"), Host Marriott, L.P. and BRE I, BRE Two, BRE Three, BRE IV, BRECP,
BRECP II, BOC, BREH, BRE II, BREH II, BRE II TE 1, BRE II TE 2, BRE II TE 3,
BRE II TE 4, BRE II TE 5 and Logan (collectively, the "Selling Shareholders"),
the Selling Shareholders agreed to sell, in the aggregate, 10,000,000 shares
of Common Stock to Salomon for a price of $12.32 per share. The Common Stock
sold by the Selling Shareholders was issued to them by the Issuer upon the
redemption of 10,000,000 OP Units held by them prior to the closing of the
sale of Common



CUSIP No. 44107P104                     13D                  Page 33 of 36

Stock. The closing of the sale of Common Stock took place on
May 8, 2001. After giving effect to sale of Common Stock, all Reporting
Persons hold, in the aggregate, 21,015,735 OP Units, which are redeemable for
cash or (at the election of the Issuer) shares of Common Stock (on a
one-for-one basis). A copy of the Underwriting Agreement is filed as Exhibit 7
hereto and is incorporated herein by reference.

Item 7.  Material to be filed as Exhibits.

                               INDEX OF EXHIBITS

                               Description
                               -----------

Exhibit 7                      Underwriting Agreement, dated as of May 2, 2001,
                               among the Issuer, Salomon, Host Marriott, L.P.
                               and the Selling Shareholders.





CUSIP No. 44107P104                     13D                  Page 34 of 36

                                  SIGNATURES

     After reasonable inquiry and to the best of his or its knowledge and
belief, each of the undersigned certifies that the information set forth in
this statement is true, complete and correct.

Dated:  May 15, 2001

                         BLACKSTONE REAL ESTATE PARTNERS I L.P.
                         BLACKSTONE REAL ESTATE PARTNERS TWO L.P.
                         BLACKSTONE REAL ESTATE PARTNERS THREE L.P.
                         BLACKSTONE REAL ESTATE PARTNERS IV L.P.
                         BLACKSTONE RE CAPITAL PARTNERS L.P.
                         BLACKSTONE RE CAPITAL PARTNERS II L.P.
                         BLACKSTONE RE OFFSHORE CAPITAL PARTNERS L.P.
                         BLACKSTONE REAL ESTATE HOLDINGS L.P.
                         BLACKSTONE REAL ESTATE PARTNERS II L.P.
                         BLACKSTONE REAL ESTATE HOLDINGS II L.P.
                         BLACKSTONE REAL ESTATE PARTNERS II.TE.1 L.P.
                         BLACKSTONE REAL ESTATE PARTNERS II.TE.2 L.P.
                         BLACKSTONE REAL ESTATE PARTNERS II.TE.3 L.P.
                         BLACKSTONE REAL ESTATE PARTNERS II.TE.4 L.P.
                         BLACKSTONE REAL ESTATE PARTNERS II.TE.5 L.P.
                         CR/RE L.L.C.
                         BRE LOGAN HOTEL INC.
                         BRE/CERIALE L.L.C.
                         RTZ MANAGEMENT CORP.
                         BLACKSTONE REAL ESTATE ASSOCIATES L.P.
                         BLACKSTONE REAL ESTATE ASSOCIATES II L.P.
                         BLACKSTONE REAL ESTATE MANAGEMENT
                                  ASSOCIATES II L.P.
                         BREA L.L.C.
                         BREA II L.L.C.
                         PETER G. PETERSON
                         STEPHEN A. SCHWARZMAN
                         JOHN G. SCHREIBER



CUSIP No. 44107P104                    13D                  Page 35 of 36


                         JOHN CERIALE


                         By:  /s/ Gary M. Sumers
                              ____________________
                              Name:  Gary M. Sumers
                              Title: Attorney-in-fact




CUSIP No. 44107P104                    13D                  Page 36 of 36

                               INDEX OF EXHIBITS

           Description
           -----------

Exhibit 1  Joint Filing Agreement and Power of Attorney dated as of May 13,
           1999, among the Reporting Persons relating to the filing of a joint
           statement on Schedule 13D, incorporated by reference to Exhibit 1
           to the Schedule 13D.

Exhibit 2  Second Amended and Restated Agreement of Limited Partnership of the
           Issuer, incorporated by reference to Exhibit 3.1 to the
           Registration Statement of the Issuer on Form S-4/A, dated
           October 10, 1998.

Exhibit 3  Contribution Agreement dated as of April 16, 1998 by and among the
           Issuer, the Operating Partnership, and the Contributors (as defined
           therein), incorporated by reference to Exhibit 10.18 to the
           Registration Statement of the Issuer on Form S-4/A dated
           October 10, 1998.

Exhibit 4  Amendment #1 to Contribution Agreement, dated May 8, 1998,
           incorporated by reference to Exhibit 10.19 to the Registration
           Statement of the Issuer on Form S-4/A dated October 10, 1998.

Exhibit 5  Amendment #2 to Contribution Agreement, dated May 18, 1998,
           incorporated by reference to Exhibit 10.20 to the Registration
           Statement of the Issuer on Form S-4/A dated October 10, 1998.

Exhibit 6  Underwriting Agreement, dated as of February 1, 2001, among the
           Issuer, Salomon, Host Marriott, L.P. and the Selling Shareholders,
           incorporated by reference to Exhibit 1.1 to the Current Report of
           the Issuer on Form 8-K dated February 7, 2001.

Exhibit 7  Underwriting Agreement, dated as of May 2, 2001, among the Issuer,
           Salomon, Host Marriott, L.P. and the Selling Shareholders,
           incorporated by reference to Exhibit 1.1 to the Current Report of
           the Issuer on Form 8-K dated May 8, 2001.