Where should I stay in the Cancun, Mexico area?

My boyfriend and I are currently planning a vacation to Mexico and are undecided on where to stay. We would like to stay at an all-inlclusive resort the Cancun or Playa Del Carmen area. As far as the price is concerned were not too worried about that and would like to stay somewhere very nice with a lot of entertainment ie. at the pool & nightlife. I have been looking on trip advisor and pretty much everywhere has mixed reviews. Please help!!! thank you!