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                                                                   EXHIBIT 3.100

                            CERTIFICATE OF FORMATION

                                       OF

                     MeriStar Safety Harbor Company, L.L.C.

     1.   The name of the limited liability company is MeriStar Safety Harbor
Company, L.L.C.

     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.

     IN WITNESS WHEREOF, the undersigned has executed this Certificate of
Formation of MeriStar Safety Harbor Company, L.L.C. this Thirtieth day of
September 1998.



                                        /s/ Christopher L. Bennett
                                        -----------------------------
                                        Christopher L. Bennett
                                        Authorized Person