I've stayed in a lot of AirBnb's that were air conditioned; hermetically sealed from the city they were in. You wander around a city and then suddenly you're in an apartment that is divorced from its location...it could be a flat in Paris or London or Oslo or Nairobi. Not here.
This is the accommodation you take if you want to feel the city....breathing around you, if you don't just want to visit Napoli, you want to *be* in Napoli.
The balcony is the killer app.
Great location.
My only minor complaint: the bed is very firm.... suits some people but I prefer softer. A few more pillows could help. Toilet might not suit very tall people (I'm 5'10" 178cm and it was comfortably fine for me).
Overall I loved staying here.