Had a very bad experience. The room assigned to me...

Had a very bad experience. The room assigned to me was not ready. It seems someone was using it before I enter. The TV was on, half empty bottle of beer was on the table next to bed, a half empty glass of water was on the TV table. This is not expected from brand like MGM.
After calling help desk they assigned me another room and asked to use same room keys. Now the bigger problem.. the keys were not working when scanned in elevator and I spend my time in calling help desk and getting it fixed. Overall I wasted my evening time in all these, I ve to get down from 1 elevator and take another one to go to the new room and I was carrying my whole luggage with my family. Overall this was the worst experience ever. I ll not recommend this hotel.