We stayed at the Signature for 3 nights during our stay in Vegas. I booked it specifically for the whirlpool spa tub in the suites. I love me some jacuzzi time on vacays and I was delighted to find a tv in the bathroom too. Three out of 4 stars is just for my bathroom entertainment options. The suite itself was just the right amount of luxury.
My only annoyance was that we booked through a 3rd party instead of the hotel itself. Unbeknownst to us, the suite was owned by an outside vendor, Luxury Suites International. It was never written on the reservation we received from them when we booked the suite. So basically, we had to play by this vendor's rules, which meant fixed housekeeping/room service hours, suite upgrades had to go through them etc. BUT at the end of the day, the great deal we received for the suite was worth going through them.
I'm one of those people who enjoys Vegas in doses. The beauty of the Signature is that it's close enough to the Strip to walk there but far enough away when you get sick of it. There is a covered walkway which connects all three towers of the hotel and MGM Grand. Very convenient with a few moving belts and a deli shop and Starbucks along the way.
Good experience overall