I stayed in Tower 3...
This is worth EVERY penny I spent for the 2-nights I added to my stay for work. (Even though two nights cost me almost $600). I will be getting reimbursed for the other nights I stayed. LOL... I am delighted by the EXCLUSIVITY of the Signature. You need your key-card for just about anywhere you go in this place. It's connected to the MGM shops and "studio walk" but to get back into the signature you need your key card. Great for leaving out the RIFF-RAFF! Also great for a getaway and no one can just show up to your room and knock on your door because you need your key card for that too. I barely saw any children at this establishment which is another plus. No screaming, undisciplined children around here.
Each tower has its own pool. However, beware there is no night hot-tubbing allowed since it closes around 6 or 8pm...which my friend and I found out the hard way.
The gym is small but very cool. Each cardio machine has its own small tv/radio attached to it. They supply the towels, earphones and anti-bacterial wipes. They also have small water bottles for you, or if you prefer different temperatures of water, they have a water cooler & cups that serves ICE COLD water. They even have small towels in a bucket, which is in another bucket of ice to cool you down when your workout is over. They also have apples for you to take when you're done for a healthy after-workout snack.
It's all-suites. I had the junior suite, and all of the suites are equipped with a jacuzzi bathtub and separate shower... I used that my first night as well. It also comes w/ a blender, coffee maker, and fridge, hot plate, and all the utensils, plates, and pots you could need to even cook there.
The staff is pleasant and wonderful and only valet for parking. You definitely feel important at this place and they treat you as such. I don't want to stay anywhere else from now on. You don't even feel like you're in vegas. No annoying casinos on the first floor either. All of it is non-smoking as well.
When I save up some money I definitely want to go back. I believe this is great for couples who can't afford to go on an expensive trip across the globe for their honeymoon. You can easily forget about the world and relax here. I'm single and I enjoyed it - just imagine if you had someone to enjoy all the amenities with. I layed by the pool w/ a girlfriend and got nice and crispy. I LOVE LOVE LOVE the place...