My second stay at the signature was off the hook.
Every room is a suite with a jacuzzi bathtub, double sink, huge glass enclosed shower, and of course a kitchenette.
I stayed in tower 2, which is a quick walk on a moving walkway to the MGM shops, pool area, and monorail.
The signature has such comfortable beds and pillows. Each room is stocked with plenty of plush towels and comfortable robes. The couch pulls out into another bed incase you have guests over to your room. ;)
All parking is valet, so be prepared with change for a tip. The property is smoke free, +1 star. No casino available here, which is kind of nice for a change.