This is REALLY a must. I was born very close to this small snack bar selling deep fried food many years ago... and now I leave in Rome. I was back a few days ago with my kids and (almost) everything was like 30 years ago. A place out of time, with very reasonable prices and fantastic fried specialties from the tradition of Naples. Well... you will not go there to sit and get 5 star service for sure. But a visit is certainly worth in particular if you come out of one of the Vomero's funiculars maybe headed to the Elmo's Castle.