Great room, easy access to the MGM Grand and rest of the strip. Hotel is quiet and staff are nice and professional. Very quick check-in, even during busy March Madness / Spring Break. "Penthouse" is a bit misleading - there are 16 floors of "Penthouses" in the Signature and really only the "Upper Penthouse" is what would normally be considered a penthouse (i.e. top of the building). Still, no complaints, it was a great room at a great price.