The reasons Mandalay bay losses it's 4 stars.
One star: we asked for two rooms both with two beds and instead got 2 rooms with two kings. After yelling at the manager did they change one of them to two queens. They said they had more but on group was too lazy to move and we're fine with it.
So while there were plenty of 2 bed rooms, and the reservation was made for a 2 bed room, only the manager was able to give us a two bed room.
One star: we needed a fridge for some stuff and they had to be asked 3 times for a fridge. On the third time they brought it to the correct room. Trust me, we were enunciating.
The rooms are rather nice and spacious. The beds are great and the bathroom could house 2 more people if you really need it.
This review is written in the winter, but I hear the pool and spa are to die for.
2 stars: customer service is constantly an issue. You try to give them some information and instead of listening they ask you point blank "why are you telling me this?" Which is either preceeded or followed by the question asking for the information. Tell them your name and what you reserved they mutter under their breath why are you telling me.... of wait, what did you reserve again?
Fking listen, we know you are barely on the vegas strip and you need a nude pool to get some people to even think of this hotel, but jesus get your shit together people and train your staff.