As a Las Vegas local, this the only place on the strip that I actually go to on a regular basis. The Cosmopolitan is full of great restaurants and great bars, you almost forget you are in a casino. If you would like to gamble, the tables are all clean and there are all of the usual slot favorites. Like I mentioned before, where this place really shines for me is in it's world class food offerings. Even the buffet is wonderful.
I have also been in a standard and upgraded guest room and they are very well appointed and chock full of technology for controlling the lighting, listening to music, or requesting any number of services from your TV.