I really enjoyed my stay at the Aria.
Things I liked:
It's in a great location in the center of the strip.
It's a really classy and well designed hotel / casino.
Staff are super nice, polite and helpful.
Room is really nice and comfortable.
Everything in the room is controlled electronically which is really cool. Bathroom is nice with a strong-pressured shower and a nice size tub. Pool and Jacuzzi outdoors are beautiful and relaxing.
A few (minor) things I didn't like:
Daily "resort fee" - they make you pay extra for things that should be included in the regular hotel price.
No hot water machine or fridge in room.
Casino needs to be ventilated better; it felt very stuffy with a strange odor (to mask the cigarette smoke).
Overall, very pleased with my stay there. Would definitely stay there again. Highly recommended.