We came to this cenote with our tour package using Xtreme. We were only here about 1 hour, and it wasn't packed only our tour group.
They have life vests. Our tour guy said that the hole is about 95 feet deep, so if you can't swim definitely vest up. There's 2 jumping spot. One using the rope/zip line (easier and not as high) and the other one about 30-40 feet high, free jump... scary!! Only for those who are experienced and not afraid. I did the zip lining one, it was great! Water was refreshing and they have a rope in the middle to help you back up. You can also go down without jumping on the stair way and hang out in the water.
Don't know the price as this was included in our tour package. read more