Just east of Guayacanes, this six-mile stretch of sand is a favorite of beach bums, with calm waters at one end of the cove and big waves at the other. Busier than Playa Guayacanes, Juan Dolio also offers more food and drink options, plus glass-bottom boat rides and parasailing. For an authentic slice of Dominican life, stop by on Sunday, when local families come to picnic and swim in the warm Caribbean water.