Service was not the best but it wasn't the worst either (I've worked in retail and understand that it is super hard to deal with customers but some staff were not very friendly at all and I felt like they hated their jobs). The rooms were actually kind of small compared to other luxury resorts on the strip. We had the standard king room and actually had to switch twice because of a dirty room (boo!). I'm not a complainer but I'll just say that we got unlucky (that's all).
Although we encountered a few rude/un-friendly staff members, I would like to make a shoutout to Kathleen at the Front Desk when we checked in. She was absolutely amazing and patient with all of my questions. Kudos!
I would come and stay here for the Aria Spa. The Spa is fantastic and the staff there are amazing!
All in all, I had a decent time and would come back to the Aria if I find a good deal in the future.