On a typical day during the island's high season, megayachts are bobbing in the bright blue waters of Ornos Bay. A long pier—lined with couples curled up in oversize, cocoon-shaped sun chairs—leads onto a stretch of sandy beach sprinkled with privileged bathers. The Santa Marina, Mykonos's unofficial country club, is the only hotel on the entire island with its own private beach. Just steps away, the whitewashed property's rooms climb a granite hill that looks out over the Aegean. Rooms, suites, and villas range from the 215-square-foot Superior Rooms to the 7,587-square-foot Horizon Villa, which sleeps 12. In every space, expect a private balcony and marble bathrooms. Two restaurants, a bar, three pools, and a first-class spa and gym have managed to maintain the Santa Marina's status as the ultimate jet-set destination, especially for those who might have their mini-mes (wearing baby designer duds) in tow. The underage crowd has their own pool, playground, and supervised kids' club.