I ended up coming to Secret Pizza as someone had recommended it to my cousin and he wanted to try the place out. Secret Pizza is on the third level of the Cosmopolitan inside a small alley sandwiched between two other places whose names I don't remember. Secret Pizza is more like a take away stand with a handful of barstool type seats along the wall to eat your pizza. The menu is simple, basically New York style thin crust pizza that is sold by the slice (~$6). There are basically two types of pies that you can get the regular peperoni pizza which has the regular red sauce or the white pizza which basically uses ricotta & mozzarella cheese as the base. We decided to get a whole three topping white pizza (~$40) and went with meatballs, half peperoni and half mushrooms. After this it was a 15 minute wait in which time the pie was freshly baked and come out piping hot.
Upon receiving the pie the first thing I noticed is that it was pretty big but the toppings were sparse covering only 65% of the pizza leaving a large outer crust bare. As soon as I picked up the first slice it was clear that it was extremely oily. I've eaten pizza's in NY so I was expecting a little grease but this was way too oily and not in a good way. The pizza itself was great. I don't like super crispy crusts that result from overcooking thin crust pizza's so I was happy that this crust had the right amount of flexibility that allowed you to eat the slice by gently folding it. The ricotta & mozzarella cheese base was excellent and had the perfect amount of seasoning. Unfortunately a tiny amount is put on very much like the other toppings. Pricewise I felt that it was relatively more expensive when compared to other joints on the strip even after giving it the Vegas Strip plus large Casino handicap especially looking at the miniscule amount of toppings.
One last comment would be that this place is super popular and is a testament to word of mouth that spreads by social media. In the 25 minutes that we spent eating the pie on the 3rd floor lobby we were approached by no less than 6 parties asking us for the precise location of secret pizza. Anyway I doubt that I will return for a super expensive slice of above average pizza.