We had an amazing time at Cenote Taak Bi Ha, located just north of Tulum. If you haven't been to…read morethis cenote, I highly recommend it. This is a cave / underground cenote.
We visited Taak Bi Ha through My Quest Concierge Private Tours, booked through Viator as "VIP Tulum Private Tour." Taak Bi Ha was the last of three stops on our day tour. My wife and I couldn't have been happier with My Quest. For details, including how much we paid, see My Quest's Yelp page here: https://www.yelp.com/biz/my-quest-concierge-private-tours-playa-del-carmen In regard to Taak Bi Ha, My Quest took care of transportation to and from, parking, tickets, translation with on-site staff, pictures, and a personalized guided tour.
We entered the cenote just after 12:15pm on a Monday. We stayed until about 1:30pm. During that time, the cenote wasn't crowded at all. There were other groups, but not many.
The cenote opening is narrow and steep (watch your head). As soon as you enter and take a look at the cenote from the first elevated platform, the view is stunning. This cenote is an example of nature at its finest. Cenotes have formed over millions of years. Inside, there are man-made platforms which are great for taking pictures.
We put on life vests, provided at the check-in shack, and we had our own snorkeling gear and flashlights from My Quest. We got into the water and our My Quest guide gave us a full tour of the cenote, including a pitch-black section where our flashlights and my phone light were our only sources of light. We also swam through a tiny hole to get there. It was wild: https://www.instagram.com/p/C4_KKkAOYzd/?hl=en
The water was cold. Bring water shoes to protect your feet. Snorkeling with flashlights is definitely the way to go as you'll be able to see the amazing caves, flowstones, stalagmites, etc. underwater. There's also beautiful coral and stalactites. Bring a waterproof camera. I used a waterproof phone pouch to take my pictures and videos. The water was so clean, clear, and blue. In addition, we saw bats.
My wife absolutely loved the experience. She was incredibly happy and thought the cenote was so cool from a nature and science perspective. For her, this cenote was one of the highlights from our trip to the Yucatan Peninsula. I agree. She described the cenote as "other-worldly" and "like being on another planet."
Cenote Taak Bi Ha has an official Instagram page @cenote_taak_bi_ha: https://www.instagram.com/cenote_taak_bi_ha/?hl=en
They've even done weddings here! https://www.instagram.com/cenotetaakbiha/?hl=en
Funny enough, inside the cave as soon as we entered, there was a sign posted with a QR code to connect to the cenote's Wi-Fi network.
Restrooms and changing rooms are available outside.