It's a great place if you are around City Center and want pizza by the slice. It is not inexpensive compared to your neighborhood pizza place but, you are not in your neighborhood. It is a great concept. No signage anywhere, e.g., hotel directories or in front of the hallway to get there to the pizza (3rd floor Cosmopolitan-left of escalators between two other restaurants w/signage).
I will keep it in mind for when I am on the Strip and want a slice or two. But, otherwise-pizza quality wise-very comparable to Rocco's on Charleston (Summerlin) except Rocco's is a neighborhood place and the slices are about 25% larger and about 25% less $.