Stayed here about a week ago for a trade show being held at the Mandalay Bay - MB was sold out and beyond my company's budget so we chose MGM. Service was great for the most part (exception was when I reported broken hinge on armoire - see below), but our room was terrible.
The first night there was an awful jet-engine sound somewhere outside - no idea where or how, as we were on the 27th floor. Additionally, the ventilation system was horrible, we could smell smoke (non-smoking floor) AND smelly whory perfume. We were supposedly upgraded to a suite, but this was no more than a slightly large room.
When we got to the room immediately after checking in, I noticed that the armoire had a broken hinge. Not wanting to be charged for it, I called the front desk to report the problem. The woman I spoke with was quite rude and told me that I wouldn't be charged for it and that she was pretty certain that engineering already know about it but that she would report it AGAIN (my first time calling about it). We kept our "privacy" sign on the door since I spread my work out all over and basically we're messy and didn't want anyone to see our mess until we're ready to pack it up....however, engineering felt it necessary to come in and make the repair despite the "privacy" sign while we were out.
I figured since we were "upgraded" the room would have a fridge and/or coffeemaker or some kind of amenities for people not interested in spending $500 per meal. Nope.
The casino was filled with the most clueless and sheltered people on the planet. For crying out loud people, it's just Vegas - don't get out much? No need to take a photo of EVERY damn thing! Or stopping mid-walkway for no reason other than to stand there and look around. Get out of the way! Some people have places to be!
The pool was a million miles away and wasn't really all that exciting - especially since the frozen drinks were SO expensive and we couldn't find a cocktail waitress to save our lives. Since I was there to work, I found it very distracting and annoying that it was so loud at night CONSTANTLY. We stayed 3 nights and couldn't wait to get home - we will definitely not stay here again nor recommend to friends. Bummer.