I'm surprised by some of the negative remarks. We recently spent 5 nights at the MGM grand casino and from the moment we checked in we felt very well treated by the hotel staff, had very clean and comfortable deluxe room in the grand tower, and spent the majority of our time in Vegas in the MGM property.
I've stayed at several hotels on the strip from a 5 star hotel at the WYNN, to a 4 star at the New York New York casino and felt the accommodations were equal to above par of any of the others.
Nothing but a positive experience and will definitely return in the future and would highly recommend the MGM to anybody visiting the Las Vegas strip.