Best pizza I had: a small restaurant in a small square with a fountain, located at Spaccanapoli, in front of Pio Monte della Misericordia (wich I visited to admire a Caravaggio).
What I enjoyed more:
- The beautifull sculpture at San Severo Chapel
- Via S. Gregorio Armeno, the artisan street
- National Archeological Museum - that's the place to see the artifacts from Pompei.
- Vomero - a different Naples.
I also visited the Duomo Church and the treasure (not very interesting), the Neptuno fountain, Sant'Elmo castle (great views to Capri, Ischia and Procida), Santa Chiara church, Jesu Nuovo church, Gambrinus coffee shop, the pedestrian street Via Chiaia, the square Piazza dei Martiri, etc.
The most central place in Naples is Piazza Dante. You are near. From the street you're staying, going down to Via Toledo, you can: turn right to the city hall square (Piazza del Municipio with Netuno's fontain, castel Nuovo), Piazza del Plesbicito (very nice, and you will find Gambrinus on the way), Royal Palace (Pallazo Realle), and walk towards Chiaia (to the right) and Lungomare (seaside). If, at the end of your street, you turn left you will find Dante square, and going a litle bit further the National Museum. More or less in front of the end of your street is Spaccanapoli. To your back, uphill, is Vomero (the funicular is between Via Pasquale Scura and Dante square).
To cross the streets: raise your arm and go. They stop. Cars, I mean. Motorcycles it's a different thing.
I stayed there 3,5 days. Not enough, have to return someday. Did not visit the interior of Castel Nuovo, chiesa dei Girolamini, San Carlo Theatre, Castell dell Ovo, Via Caracciolo, Capodimonte Museum, etc. If I have had the time, I would have visited Procida.
Hope you enjoy! You are probably already on Naples, anyway, from airport to city (Piazza Garibaldi) you have Alibus, in 2018 ticket price was 5 euros per person, bought to the driver.