There are three restaurants called Sorbillo along Via dei Tribunali; this is the one with the crowds waiting outside. Order the same thing the locals come for: a basic Neapolitan pizza (try the unique pizza al pesto or the stunningly simple marinara—just tomatoes and oregano). They're cooked to perfection by the third generation of pie makers who run the place. The pizzas are enormous, flopping over the edge of the plate onto the white marble tabletops.
Via dei Tribunali 32, Naples, 80138, Italy