The apartment is absolutely recommended. It was very clean and the host was very nice and gave us tips on what to do and what not to do. The apartment is located on a hill and the view from the huge terrace is wonderful. You can see all the way to the coast and also Vesuvius. It is very cozy and huge.
The way to the Airbnb is very narrow, so it is recommended to explore the city by metro or Uber.
I would always recommend the host as well as the apartment. I think it is important that the host is on site upon arrival. This saves some nerves regarding maneuvering in narrow streets, as well as the direct route to Vomero. Therefore, it is worth to arrange an arrival time.
I will come again.