This place is a vegetarian restaurant, although only really by circumstance, as it only offers two types of pizza - with cheese or without (Margherita or Marinara). So no hassles over trying to understand the menu! We ordered one of each - we both preferred the Marinara, although the Margherita is pretty damned good too! I would recommend a visit to this place if you are visiting Naples - it is frequented by locals and is just great to go there. The staff don't speak much English, but it isn't hard to let them know what you want! You wont be there long - there is a queue to get in and you pretty much have to leave as soon as you are finished your meal!
Cons: Have to queue outside. Take a number.