Great value! Kitchenette has everything you could possibly need. Pullout bed is comfy. Penthouse actually means top 10 floors, but I digress.
We loved having access to the MGM Grand pools and actually didn't use the Signature private pools as we ended up spending most of our time on the lazy river. Hit up Target for fun $5 inner tubes before you go rather than $30 at the poolside shop.
Great access to the strip via the monorail and it was very easy to call Uber/Lyft when we needed.
Only downside was the lack of staffing and Wifi. When we first arrived there was no valet or check-in at our tower and had to wander around until we found staff. We also had to walk back and forth between towers to access our car or concierge. Parking is valet only and valet line can take up to half an hour, though usually quicker (3-10min).
When I reached out about the lack of Wifi they said the tower WiFi was under construction and didn't provide an alternative.
Overall a great stay, great value, would stay again!