I just returned from a week at the Iberostar - second time there. Dressel divers does a great job, and you can't beat the convenience. We dove this year with Tago - very laid back, but kept good control of our group, which isn't an easy thing. There were 15 of us, so Dressel arranged for us to have our own boat most of the time.
Water was 84-86F Mares degrees.
All dives in COZ are great. My favorites are Palancar Gardens, and Columbia Shallows.
And, don't miss out on an opportunity to dive the Cenotes in Playa. Dressel can arrange everything. It's an unforgettable experience.
Say Hi to Tago and Sophie of Dressel, from Rick of The Whalers Dive Club.