Jesse P.
Google
We visited both cenotes, Cristal and Escondido. You buy tickets from Cristal Cenote across the street, for both its 300 pesos per person.
Escondido was a bit larger and more clearer water. We enjoyed our time there, was pretty quiet even for a weekend.
Would recommend taking a car, scooter or ATV to Escondido from Cristal, since even if its walkable, it is a "long" walk.