I was staying at the Cosmopolitan and heard about this place but, since I had meetings at most of my meals during my stay, it wasn't the sort of place that fit my schedule.
But, on the day I was leaving Las Vegas I wanted something quick and filling to hold me over until I got back to Phoenix and I hunted this place down.
I guess when The Cosmopolitan first opened it was fun finding this "hidden" place. But, the word it out and other yelpers have even posted photos of the hallway to look for. However, if you aren't paying attention and maybe you're a bit hung over it would be possible to walk right past it.
They mostly serve pizza by the slice with a number of selections available so you can go in, order, eat, and leave. They'll also make you a pie but you'll have to wait for it.
The pizza is NY style and it was excellent! By Las Vegas standards, not too expensive.
Great spot for a good casual meal off the beaten path.