This place is located in the Cosmopolitan hotel on the 3rd floor next to the Blue Ribbon. It's behind the pool table and retro chairs. You have look for the dark hallway with records on the wall and enter in. This place is such a secret that it's not even listed on the Cosmopolitan directory. It's basically New York style pizza that you can order by the slice or by the whole.
The menu is simple and you can ask them if they have any other flavors, since they have other pizzas hidden and not on display. I went there twice and one night there was absolutely no line and the other night, there was a long line out the door. I would anticipate a line if you come here really late at night.
The pizza is thinly sliced, crispy and the crust was delicious. I personally think it's really good and I was sober, too. I highly recommend you check this place out if you're at Cosmo.