My wife and I used this place as a base to check out Naples and the surrounding Roman attractions. The location is great for that as it is a very short walk to the train station.
Being so close to the train station, some people might find the area sketchy, but we had no problems and found the area to be really friendly overall. There is a significant police and military presence so you are unlikely to run into trouble.
The apartment is also on the edge of the historic centre, allowing you to easily walk to the museums and sights in this area.
Very convenient for those early morning trips to Pompeii etc. and Natasha, the lady working there, is super nice and very hospitable. We would definitely stay here again if we found ourselves in Naples.