HOUSTON, TX— Gemstone Resorts International, LLC, a leading resort management company that specializes in managing and asset managing four- and five-diamond unique urban hotels and lifestyle resort projects, has signed two new management contracts. The deals are with the historic Warwick Hotel in Houston, TX, which will be reflagged as the Hotel ZaZa Houston, and the 63-room Casa Madrona Hotel & Spa in Sausalito, CA.
