Here is the good news...this place is open 24 hours a day! Do I really need pizza at 4am? I have asked that question to myself many times in Las Vegas!!! My mind always says yes but my body says no!!!
I have read the other reviews and it seems like everyone has had terrible experiences here. I have not because I only eat three things at Sbarro and I can never go wrong. A pizza slice, a salad and/or a beer. See how simple that is. Never go here for the pasta...it looks so gross and it is sitting in sauce and under hot lights all day long. Just walk away because it is not going to be good. Do not let the girl talk you into upgrading for a few bucks more...you really do not need those extra sides.
The staff here is always nice unless the manager is here making them nervous. Bosses make everything harder.
So if you follow my advice just stick to the simple things here like a pizza and a beer and everything will be okay. Also this location is located in the walkway near the monorail...so you can grab some food before you jump on the train.