This is a top-notch hotel. The rooms are spacious, the grounds are beautiful, and the casinos are also very nice. BUT . . . I have to warn you. We stayed on the side with the view of the strip, which was fantastic until we wanted to go to bed. They have this poolside/partially outdoor night club that has famous DJ's in every Friday to Sunday night, and they are LOUD. I was kept awake on the 55th floor, as was my wife, by driving bass, mainly. It stopped at 4:40 AM. This was 55 floors away from the action!
The hotel was very nice about it, helping us change rooms (even gave me the option of changing that night, when I was complaining around 3:30 AM), which we did the following day. Hence, we had a very good view off the North side of the hotel: pretty mountains, but could no longer see the strip. They were quite professional, of course.
The hotel is adjoined to the Wynn, which has a very nice buffet. It is located right across from Fashion Show Mall, which is nice, and they offer free valet parking, which is handy if you want to do anything off the strip during your stay.
We didn't use the spa facilities this time, but my wife's experience with their spa was great last time (expensive, of course). The hotel, though, is of exceptional quality, particularly for the price.