Located 26 miles south of Cancún, the Mandarin occupies a one-mile-long, 150-yard-wide sliver of land that stretches from the region’s main highway to the Caribbean Sea. Reflecting pools line a thatch-roofed pavilion at the front of the property, where guests board golf carts for a ride through the jungle, past a cenote (a freshwater sinkhole), and along canals to their rooms.