La Casa de la Playa, Playa del Carmen  It’s the brainchild of the Xcaret Group, the company behind the eponymous eco park and the larger, 900-room Hotel Xcaret (and several other hotels in Playa del Carmen). But this one is decidedly boutique, with just 63 suites, all right on the ocean, every single one of which has its own private plunge pool. The resort itself is outstanding, with an emphasis on Mayan culture and food and a commitment to wellness.