Posillipo is a great area to stay in - the apartment next to the sea (and close to a supermarket) with a lot of locals living in that area. The apartment including AC, its terrace, super-high and big windows and view are definitely a highlight. We had the chance to relax from the busy city and noises and have some wonderful breakfast during the very sunny mornings and lunch time outside with a sea view in the apartment.
However, one has to be aware that the shower ceiling is quite low and one has to climb 161 stairs to get to the apartment. Additionally, during our stay there were a couple of construction works on the stairs that led to the apartment.
The host is very friendly and open. He is let us even check out much later and were always available for any of our requests.