During my stay in Naples, I enjoyed getting my daily bread here. There are several choices (wholemeal, classic panino, sourdough, and grain bread), and the bread is good.
The only point of concern is the price of bread, which changes from day to day without understanding why—a 20-30 cent difference.
This bakery also offers taralli, but they use beef fat to make them, so I wasn't able to try them.