At Nayara Springs, each of the 16 villas comes with its own plunge pool, drawing on mineral-rich spring waters from Arenal Volcano next door. Venetian mirrors, hand-loomed rugs, and hammocks add to the easy-breezy vibe at this secluded jungle retreat, complete with a spa and yoga or Pilates offered daily. Get to know your neighbors—namely howler monkeys and blue morpho butterflies—on a tour with one of the local guides. It’s just one of the experiences that your personal host can coordinate.