You cannot walk to the ship from the Sheraton, because Celebrity sails from the Pan American Pier, not the pier in Old San Juan. However, the Sheraton is conveniently located in Old San Juan. It is a short taxi ride to the pier & it is not in a loud area. If you're looking for a hotel with a beach or beaches very nearby, stay on Ashford Ave. in the Condado area. You can easily take a bus to Old San Juan from there.