We spent our honeymoon at Riviera Maya area....
I think the name was Aventura Spa resort or similar.
Yep, fly into cancun and then a 20 or 40 minute bus ride south to the resorts. Lots of resorts to choose from, but definitely look at the Riviera Maya area and not right in Cancun itself.
We loved it, resort was beautiful.... was 17 years ago tho.