Rosetta
Pizzeria Rosetta is about as an authentic a pizzeria as you can get in Italy. The pizza is cheap, and the quality (for the price you pay) is superb. It’s no wonder that it’s usually absolutely rammed with locals.
There’s no table service here, you have to go inside and order at the cassa (till). The woman that serves you is simultaneously super lovely/smiley and absolutely terrifying, all at the same time. She runs the phone lines and the queue by herself, and knows exactly when everybody has ordered and when. She’s incredible. She processes more orders than I’ve ever seen anyone ever process in my life, by hand (and I worked in restaurants for a long time). If only they could fire all the useless men in Rome and put her in charge of the country, they could probably half the Italian public debt whilst making everything run on time.
Pizzeria La Città Di Pulcinella
You can find La Citta Di Pulcinella at the top end of Via di Leuca, almost as far as Castromediano but still only a 15/20 minute walk from Porta San Biagio.
It's a rock solid Neapolitan pizzeria complete with fake interior Napoli balconies (with clothes hanging from them), check table clothes, and Moretti on tap.