I love it. LOVE. I stay in a lot of hotels, and this resort was very well executed. I have been in a King Terrace room, as well as the Wrap-Around Suite. The suite had a view of the bellagio fountains and the strip and exceeded my expectations.
I think what does it for me is the fact that you know you are staying in an upscale resort, but it's not trying too hard. Their attention to detail, the clean lines and the contemporary feel are very conducive to a pleasant asthetic. Either that or the oxygen level is just realllly high here :). It's definitely a younger crowd and some people may sway one way or the other on that fact, but I think that was also a pro for me.
The staff is very courteous and attentive, and they worked to fix a minor issue we had during check in. The pool areas are great, Marquee is trendy, hip and fun just like you would expect from the newest and largest day & night club, and the restaurant choices are a nice addition to the strip.
I've stayed here twice now, and already have 2 more stays booked this year. Book it.