I just came back from there. I was staying there because the Miss Universe Pageant was there and I was doing some biz with the pageant and it was being held there.
The room was gross. there was scuff marks on the ceiling. I HAVE NO IDEA how that happens. The grout in the shower was moldy. There was a HUGE stain on the sheets and there was dust on the headboards.
The hotel had sand tracked thru it from people coming and going to their fake beach.
I will admit I have high standards about cleanliness. So if you do to, Mandalay Bay will not cut the mustard.