Reading reviews on Yelp helped me find this "hidden gem" - thank you Yelpers for your clear instructions! At the Cosmo, take 3 escalators up, in a pathway between 2 restaurants with picture frames all along the wall.
However, didn't seem like a hidden gem when I went - there were quite some people there, even a mini line-up.
Pizza is freshly made and doesn't disappoint. For $4-5 a slice, you can't go wrong. Love their white pizza, that was my favourite. Ever since trying this place, I've been craving NY-style pizza, but have not found something yet to stop the craving.
Really good if you need just a cheap eat while you splurge away during your Vegas stay.