This is a fabulous place to stay. It's located very centrally, within walking distance to the metro and train station, and has tourist sights, coffee shops and restaurants all around. The supermarket is a block away. Marco is a phenomenal host who really goes the extra mile. He gave us lots of suggestions of things to see and do and was extremely helpful. I felt I had an insider's perspective and definitely saved money following his advice.
Don't let the outside of the place put you off. It's a really old building but the apartment is modern, clean and very comfortable. I'd stay here again in a heartbeat. We really enjoyed Naples. So much to see and do and it's a very friendly city.