Playa Langosta
At Langosta, clear, shallow water facing the Bahía de Mujeres (just 0.1-0.4m of chop) comes with the basics for a day with kids: public restrooms and showers and an R1/R2 bus stop named after the beach, so you can get there without a car. If older kids want action, Playa Tortugas is 1.5 km away. There are no permanent lifeguards, so supervision is up to you.
