Overall a great experience!!

Big Pros:
- you can use the MGM Grand Amenities as well as the MGM Signature amenities
- amazing balcony views (corner unit at 21st level) >> GREAT strip views
- kitchen with all cooking supplies provided for free by MGM Grand
- we used our balcony a lot... :)
- great TV's
- very uncomplicated check-in (we were already registered and got free valet parking)
- jacuzzi bathtub.. (unfortunately we didn't end up using it... instead we went to a great pool party at MGM Grand

Downside:
- we were 4 people and thus it was not that spacious for us, but we were out a lot anyways
- the pull out sofa in the living room is not so great, but still ok to sleep in