I have just returned from a 4 night stay at the MGM signature, we shared the accommodation with another couple and the set up was fantastic. The service from the MGM was fantastic, nothing was too much trouble, the set up of the accommodation was two separate suites which is fine when 2 couples are going. Both rooms were very comfortable with lots of room with very large bathrooms in both suites, there was also a fully fitted kitchen in both suites, but we didn't need to use them. The Signature is attached to the MGM grand and we used all the facilities we wanted.
Its a great place to stay