This a luxurious-feeling property and is an excellent value for the price. Everything is accurate as described; however there are some details not clearly stated in the listing that I think are important to point out.
1. The room is not serviced by MGM's housekeeping. If you call the front desk for cleaning, toiletries, or turndown service, they will not help you. Contacting your AirBnB host will provide some services, but obviously not as quickly as if this was handled by MGM's staff. Also, at one point I asked for a refill of the body wash gel they had initially provided, and was instead given four bars of hand soap.
2. The valet is not 24/7, and is not well organized. Our first day, it took them nearly 30 minutes to get our vehicle, making us almost miss our dinner reservations. Additionally, after we had already booked & paid, Shelly sent us a DM stating the valet closes at 10pm, but "hours may vary." Our first night, we came back around 9pm and waited in a valet line until 9:30pm with several others. We were then approached by hotel staff asking us why we were waiting in line when the valet was already closed. This was a very unwelcome surprise at the end of a long day of traveling, as we just wanted to go to bed, especially considering the self-parking situation (see below).
3. The self-parking garage is not on the premises. If the valet is closed, you have to park in the normal MGM structure, which is 10-15 minutes walking through either not-the-greatest part of Vegas (the path we found ourselves) or through some loading docks and back alleys (the path given to us by the hotel staff). It's not a great situation, but it was free, and better than gambling with the valet service (which we did not use again after our first night).
Overall, it was a good stay. Had these points been made clear in the listing, it may even have been a 5-star review. However it is important for people booking this property to fully know what they will be receiving, and omitting details like this needs to be acknowledged.