Options and availability may be limited. We exchanged into Grand Mayan Riviera Maya for next June 2014. Originailly, I thought we would vacation in Cancun. However, after researching all of the things to do in the Yucatan, we decided to stay in the Riviera Maya area. By doing so, we are closer to Xplor, Xel-ha, Xcarat, Tulum, and Akumal Bay. Not saying we will do it all, but it's nice to be so close and only 15 minutes from PDC.
I guess it all depends on what you want to do. Cancun has a good party scene.
Just wanted to share another option.