My husband and I just returned from a trip to Vegas. We stayed at Aria and had a great time. I liked how the hotel was well connected to surrounding areas. The Monte Carlo and The Bellagio were connected via a tram in the adjacent mall. I also liked that we didn't have to walk through the casino every time we wanted to leave the hotel. The pools weren't very crowded or crazy either.
If you're looking for a party scene this hotel might not be for you. We were just looking for a place to relax. The hotel has this amazing concierge service that you can reach via text. My husband used it all the time - he booked massage appointments, asked the service to let a restaurant know we were running late, got on guest lists for parties/clubs. It was great and saved us from always being on the phone. You can also check-in ahead of time and check-out via your mobile device too. It was great to see the hotel embracing technology.
We also used the salon and spa. The salon was great. Everyone was very friendly. They have massage chairs while getting your hair washed. Nice perk! I would stay here again.