Call it Back to the Future travel. An increasing number of luxe lodges in remote corners of the planet are trading modern comforts for those of the natural world. Case in point: the 24 palm-and-bamboo bungalows of Hotelito Desconocido, two hours south of Puerto Vallarta (doubles from $825; hotelito.com). Here, there are no TVs, phones, computers, or even electric lights. Instead, guests will find handwoven bedspreads and candlelit, chef-prepared dinners, plus a 31-mile stretch of isolated Pacific beach. Swim, kayak, windsurf, horseback ride, or simply sit in solitude—freshly shaken margarita in hand, of course.