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                                                                    Exhibit 3.31

                            CERTIFICATE OF AMENDMENT

                                       OF

                       EQUISTAR CLEVELAND COMPANY, L.L.C.

     1. The name of the limited liability company is: EQUISTAR CLEVELAND
COMPANY, L.L.C.

     2. The Certificate of Formation of the limited liability company is hereby
amended as follows:

          "2. The address of its registered office in the State of Delaware is
Corporation Trust Center, 1209 Orange Street, in the City of Wilmington, County
of New Castle. The name of its registered agent at such address is: The
Corporation Trust Company."

     3. This Certificate of Amendment shall be effective on July 1, 1998.

     IN WITNESS WHEREOF, the undersigned has executed this Certificate of
Amendment of EQUISTAR CLEVELAND COMPANY, L.L.C. this 25th day of June, 1998.

                                                   /s/ Christopher L. Bennett
                                                --------------------------------
                                                    Christopher L. Bennett
                                                By: Authorized Person
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                            CERTIFICATE OF FORMATION

                                       OF

                       EQUISTAR CLEVELAND COMPANY, L.L.C.


     This Certificate of Formation of EQUISTAR CLEVELAND COMPANY, L.L.C. (the
"LLC"), dated as of August 8, 1995, is being duly executed and filed by Paul
W. Whetsall, as an authorized person, to form a limited liability company under
the Delaware Limited Liability Company Act (6 Del.C. Section 18-101, et. seq.).

     FIRST. The name of the limited liability company formed hereby is EquiStar
Cleveland Company, L.L.C.

     SECOND. The address of the registered office of the LLC in the State of
Delaware is c/o United Corporate Services, Inc., 15 East North Street, Dover,
Delaware 19901.

     THIRD. The name and address of the registered agent for service of process
on the LLC in the State of Delaware is United Corporate Services, Inc., 15 East
North Street, Dover, Delaware 19901.

     IN WITNESS WHEREOF, the undersigned has executed this Certificate of
Formation as of the date first above written.


                                   /s/ Paul W. Whetsell
                                   --------------------
                                    Paul W. Whetsell
                                   Authorized Person