You get the best of all possible worlds at The Mayan Princess Hotel, a hot spot for serious divers. The hotel is located right on a white-sand beach, with quiet rooms and plenty of hammocks for swaying to views of the Great Barrier Reef. Yet this gem is smack in the heart of San Pedro, a colorful town filled with shops, restaurants and bars. Best of all, the dock right out front is home to the Amigos del Mar dive center, a PADI-certified facility that offers scuba excursions as well as lessons, snorkeling trips and fishing expeditions. Packages are available. At The Mayan Princess, all rooms have kitchenettes. No need to cook breakfast, though: pastries, fruit juice and coffee are complimentary every morning. Rooms are cleaned daily. Internet access is free.