My hubby and I went to Cancun (actually about an hour south) for our honeymoon. We stayed at this beautiful resort called El Dorado Royale. It's a Karisma hotel, which I guess has several hotels/resorts in Mexico. It was fantastic. Adults only, all inclusive, gormet food, top shelf liquor. They had something like 7 pools, a spa, 7 restaurants and 11 bars. You had to pay extra for spa services and water sports like kayaking, but they had other activities that were free like paiting pottery, games and such. They even had free bicycles you could use to ride around the property.
We stayed in a swim up casita suite which had a huge jetted spa tub and a separate outdoor shower that was paved with river rock. Private of course!

It was so great. I would love to go back.