We had a fabulous stay at Susy's.
The apartment is brand new with big bright rooms, a really great terrace with views of the churches and towers of Naples. In fact, part of the ancient city wall is integrated into to building!
5mins walk from the "Centro Storico", the old town centre an 10 minutes from the train station. Optimal positioned to explore.
As experienced travelers know but still should be mentioned here is that like in every big city the area around the train station is slightly rough, but saying that, we were two women and two beautiful blond teenage girls and we never had any problem. I really recommend it and would stay there again.