I can't praise this place enough.
The views are insane. The unit is spacious, clean and comfortable. A pretty big jetted tub in the master bathroom and a very comfy bed with fluffy pillows.
Being so close to the MGM Grand, but away from the cigarette smoke and crowds is an amazing happy medium. You get all the benefits and comforts of staying at a hotel, while enjoying the benefits of staying at someone's actual home.
The Signature is beautiful. A grandiose lobby, with friendly front desk staff. You have several pools/hot tubs to choose from - as well as gyms. The gym is pretty great, and it was never crowded throughout my two week stay.
Walking to the MGM grand through an air conditioned walkway is a great way to access all the things you want to in Vegas. The location of this is great. Check-in was smooth. The valet parking is so convenient.
One of my best stays in Vegas. I can only wish Lee's place is available next time I'm back!