Overall the hotel was fantastic. We arrived early in the morning (9:30) on the Sunday of a long weekend in the US. Not only were we able to check in early but they had two rooms on the same floor clean and available. We were travelling with another couple so 2 rooms on the same floor was a nice touch on the service side. The beds are the most comfortable bed we have slept on in a hotel anyhwere. The rooms are very well cleaned and maintained by the staff. The mountain view we had from the 52 floor was pretty spectacular, not really sure if it would be worth the extra $30/day to 'upgrade' to a strip view, espeicially since unless you on at least the 40th floor the view would probably be obstructed anyhow. The one negative is that during the winter season the pool including hottubs closes at 4pm. The other big negative for us was all the food options immediately in the hotel or in the City Center Complex were quite expensive for what was offered. We ate at the Italian restaurant in the Cosmo hotel and it was $90/couple for entree only with one drink each. We found far better value both in serving size and price on many other areas of the strip. Conceirge was very helpful. We did appreciate that security actually checks for room keys prior to going up the elevators, it is reassuring to know that the odd person you might see in the elevator or on your floor legitimately belonged there. We would recommend that you request a room without adjoing room door. The hotel was very quiet except for the door between rooms. Most rooms are not adjoining but ours was and that seemed to be the one weak link in the sound barrier. We would most definitely stay at the Aria again on our next Vegas trip. Pricing for us seemed comparable to some 3 or 4 star properties but the rooms themselves are 5* for sure.