We had a cool suite on the 9th floor with two bathrooms, a kitchen, and a balcony (which apparently is rare in Vegas). The room was just impeccable! The only problem was the walking distance to the skytrain because out of the 3 Signature buildings ours was the furthest from MGM.
If you are traveling to LV for a special occasion, I think this would the best place to treat yourself with. It feels more like a luxury residence than a hotel. And it also doesn't have any slots in the foyer, which can tell you a lot about the atmosphere.