The Signature is truly a 5 star hotel in Las Vegas!  I went to LV a couple of weeks ago with the wife on a part business/part vacation trip.   We had a limo pick us up at McCarran to drive us to the hotel.   I was surprised to be driven up to a gated entryway to the circular driveway in one of the three towers.   From the moment we stepped in the lobby, I knew I was in for a special visit.   The front desk gal was real helpful.. her maiden name was the same as my last name and we chatted a bit about it.  Crystal was nice enough to ask me if I was afraid of heights, and I told her no but place me in a room that she would stay in if she was getting checked in.   We got a super room on the 21st floor with a view of the Las Vegas strip!  The surprise was that we could hang out on our balcony and enjoy the 109 degree heat!   Once you stay at the Signature MGM Grand you are spoiled by getting used to this type of accomodation.  I have stayed at Mandalay Bay at the Hotel and this place is a million times a better experience.   The food is exceptional.  Overall this is one of the better places to stay in Vegas