The bottom line: If I could I would choose another hotel any time.
I stay at the Wynn once a year for an annual conference. I have heard much about it before coming - the grandeur, the size, the facilities. I would use other words: smelly, noisy, unpleasant service, constantly looking for ways to remove money from your pocket.
The pros: Indeed lavish rooms, great views, and there is no real need to leave the hotel if you have the money to afford what is offered within. The pool is really nice.
The cons: Disclosure - I do not care for Vegas. But many of my problems with the Wynn are specific. First of all the internet situation - In 2012 I do not think charging $14 a day for internet is ethical. Especially as free WiFi is scarce and poorly located (perhaps on purpose). Second, The place stinks. It smells of cigarettes and some sort of synthetic odor that does a pretty poor job at masking the cigarette smoke. Thirdly, the staff is unpleasant. True - they will all constantly smile and ask you how you are. But this is a plastic exterior. It is more than obvious this is what they were told to do. From my experience they did not go out of there way to help several problems I have encountered including checking in to a room on time, for instance (they had the wrong kind of room and I had to check my bags in and be late for a conference). Another example is the pool. The pool is awesome. But the hours are uncomfortable (9 AM - 6 PM). That is not enough. And for some reason the staff kept asking that we leave a few minutes ahead of time toward the end of the day (and always once the end of the day is approaching several of them suddenly appeared and kept asking us to finish swimming. Why repeat?).