Tulum is a place of myth and mystery, of Mayan temples, and majestic cliffs. Now, on its most exclusive and quiet southern end, comes Casa Malca. Set along a private beach, perhaps the widest of the endless white sand beaches in this corner of the Yucatan peninsula, the nine-room resort marries three spiritually inspiring elements — world-class contemporary art, nature, and laid-back luxury. The driving force behind the property, Lio Malca, is a lion in the art world, having launched re