Baha Mar comprises three hotel brands — Grand Hyatt, SLS Hotels and Rosewood Hotels & Resorts — for a total of 2, rooms. Grand Hyatt. Baha Mar Casino at Grand Hyatt details page: This casino is located in Nassau, New Providence. Baha Mar Casino at Grand Hyatt has a total of gaming Casino opened : April 21. Baha Mar is a resort under construction on the island of New Providence in the Bahamas, owned by Baha Mar Resorts Ltd. and managed by CEO Sarkis.