Stayed here for 5 nights to attend a conference in Mandalay Bay (next door). We stayed in a room with 2 Queen beds in the West Tower. It had a separate 4ft by 4ft shower. I have 0 complaints about the room. Everything worked and plenty of room for 3 people.
There is a Checkin Desk at the bottom of the West Tower where the Taxi Driver dropped us. Literally no one in line. Took us seconds to checkin. Problem with this desk is that it is not always open and there is no sign saying when it is. I stopped by twice in two days and it was closed both times. The Front Desk Checkin line was about 30 to 40 deep when I went by a few times.
Casino was spacious. Lots of new games. It was not crowded at the times I played. Use your MLife Rewards card!