It's your standard upscale Vegas hotel, but much more quiet and private since it's set back from the strip. The tunnel connecting to the MGM casino area is a bit of a haul... a necessary evil.
The staff at the Signature couldn't have been better. Front desk friendly and helpful, a staff member who brought us extra towels and winked over our extra guests (we were cramming five into a two-person room) AND gave us a ton of extra water bottles for the room (free).
The location was perfect for us, with the Hofbrauhaus a short (for Vegas) walk east of the hotel, across the street from NYNY for the roller coaster, and obviously attached to MGM for our fave casino action.