We spent 5 days in Fabrizias apartment and we all can say the very best of it. First of all the communication was smooth and really quick, whenever we had any questions they were answered immediately. Meeting at the apartment was on time.
About the location: we spent our days walking around the city and we are pretty sure that this location close to via Forcella is far the best. First of all it is safe, we had zero negative experiences, even we arrived after midnight each day. The apartment is close to bars, restaurants (even da Michele - however it was not the best pizza in Naples by our concern), shops open till 11pm, walking distance to museums and all Centro Historico sights.
The apartment is clear, well equipped and has everything we needed. Heating is by AC but it was also totally ok. No mold or rust which is rare. Only thing you need to bare in mind is that it is on the 5th floor without elevator - no issues but think before you leave not to forget anything.
We also had the luck to experience new years eve from the terrace (it is shared but absolutely fine) - the fireworks from the neighbours were amazing. We really recommend this place.