The Riu Cancun is a beautiful hotel. Me and my friends stayed there last June and had a great time. Its within walking distance to all the clubs, the hotel staff is very friendly and helpful. There are also liquor dispensers and a fridge full of beers in each room. If you have any other questions you can send me a message and I'd be happy to answer them for you.
I have stayed at the RIU Cancun 5 times now!! I love it! Wife and are staying at the Riu Palace right next door to Riu Cancun March 15th to 22nd!! We will be hanging out at Riu Cancun mostly and go to the night clubs with the entertainment staff from Riu Cancun. I love those resorts!!!