My mom and I came here during our Vegas trip to enjoy a day at the spa and to relax. The spa's amenities and services were ok, but nothing to write home about for Vegas standards. We each got a massage, and my mom told me her's was relaxing. My masseuse was attentive about the room warmth level, whether or not I like the scent of the oil, music choice, etc. Overall, she did a pretty good job.
I just wasn't very impressed with the Aria Spa though. I feel the spa at Caesar's and Encore is far superior.
There is one very big problem with Aria's Spa and this is the fact that they are located upstairs of their Club/Lounge area in the pool. The whole point of going to a spa is to relax. It's a bit hard to relax in the spa when you're in the whirlpool or sitting area and you hear loud fist pumping rap songs and people screaming downstairs in the Club...