I have stayed at the MGM Grand twice, the first trip we stayed in the Bungalow Suites... which was pretty nice. This last trip we stayed in the West Wing.
The rooms are tiny and you can hear every little noise the neighbor makes. The hallways are weird and the placement of the rooms is odd. When we checked in one of the lights in the room was out and they had to come fix it.
The only thing I really liked about the room was the stand up shower with the dual shower heads, and the frosted glass. It's the right environment for the kinkier couples ;)
The room feels dated and biggest let down of all NO REFRIGERATOR!!!! That alone has me never coming back.
The MGM Grand itself is fantastic but if it means staying in the West Wing again, then I will not be back.