Fitness Room Flooring

Anyone know which hotel has the best fitness center in Cancun or Playa del Carmen? Or that hotels have little or Gyms ill and should be avoided at all costs because we only looking to stay in a place with a good fitness facility? We are looking to turn our stay of 8 days holiday in the fitness / Health and we are looking for a large hotel with a gym, sauna, and / or steam room. Also a regular place with the training would be great. ¿Ideas on how to create fitness vacation in Cancun or Playa?