I like the Rio. Its really affordable. When in vegas who cares where you stay when you aren't supposed to be spending any time in your room anyway?!
Its really really affordable.
The Voodoo Lounge is tons of fun, and its all about fun without the pretentious nature of the strip. :)
The pool area is large with some nicely placed hot tubs away from the pool so you can really relax. Not quite a grotto but close.
The best part about this hotel is that Penn and Teller are here! I've been to Vegas quite a few times now and have not missed them once! I always bring Penn a bottle of Jelly Apple Red #054 by Essie. :)