Siesta Key is one of the top family beaches in the U.S. Its sugar-white sand is highly packable -- perfect for building sandcastles -- and slopes gradually into the clear Gulf of Mexico waters, where gentle, ankle-high waves are wonderful for young swimmers (as well as water sports like paddleboarding, skimboarding, and kayaking). Lifeguards keep watch on Siesta Key Public Beach, and many of the beach areas are equipped with picnic areas and playgrounds. Many area hotels cater to families with things like in-room kitchenettes, sleeper sofas, and on-site laundry facilities, but the six we've highlighted below are the best of the bunch.