We spent a week with my girlfiend in the apartment, it was really comfortable for the two of us. The location is perfect, 15 mintues walk from the ferries and 1 metro stop from Napoli Central / Garibaldi train station, so one can easily reach the nearby cities and islands. And of course there are many local sightseeing locations within walk distance in Naples also.
Sara is a really excellent host, we had late night arrival and departure times and she was absolutely flexible with the check in and check out. I would recommend this apartment to anybody who wants to explore Naples and its neighbourhood.