One hundred acres of beaches, lagoons and organic gardens make up this resort (which means "little unknown hotel" in Spanish), located south of Puerto Vallarta at the end of a peninsula boasting a UNESCO World Heritage-recognized wildlife estuary. But it's in Hotelito's 27 thatch palafitos, poised over a lagoon, that couples will likely spend most of their time. These breezy, affordable overwater bungalows feature hand-painted tiles and canopy beds carved from guayabillo wood. Brightly painted rowboats serve as your means for exploring the property's watery landscape — home to pelicans, frigates and sea turtles — as well as its 40-mile white-sand beach. Come dusk, the solar-powered villas and grounds are lit with hundreds of candles and blazing tiki torches, giving every evening a romantic glow.