The Mo
Google
Very beautiful cenote, not overcrowded at all, clear warm water and enough places with shade, for the hot days with powerful sun.
How to get there: do NOT follow Google Maps; instead, before leaving the main highway, proceed for another 150-200 meters (coming from Tulum) and exit on the right side at the other cenote, where you can buy the ticket for Cenote Escondido too. Then ask for directions, it is easy to find (just across the street). Unfortunately, they force you to buy a combo ticket for both cenotes for 300 MXN.