The decor is awesome. I love the feel that you're actually in the chandelier with the crystals draping all around you. Instead of a megabar that you have to push your way toward and wait for half an hour just to scream what you want at the bartender, they have distributed several little bars around the outside in addition to the central location. Well planned, Cosmopolitan.
When I was there (and I've only been there once) the music was entertaining and subtle, I am a fan. Four stars instead of five because this is a club on the strip, so prices are high (although, my vodka tonic was only $7, which for the strip ain't so bad, but other drinks were pricey). The wait staff largely ignored us (guess we don't look like we have money), but as long as we can actually get to a bar and order our own drinks, it's all good!
The next time out of town friends come in this is definitely a stop on my list, it's up there with the Bellagio fountains.