A waterfall cascades over a cavernous grotto spa below a trio of pavilions at this resort villa bathed in ocean air. Swim into the boulder-lined lagoon pool right up to a palapa bar with submerged lava rock stools, then shower alfresco before an afternoon on the links. Within Mauna Kea Resort, it's a 5-minute drive to the beach or gym. Ask about helicopter tours, horseback riding, and sunset sails.