Giovanna was an excellent host! We stayed with our 14-month-old daughter and used Giovanna's crib, which was perfect. The apartment has a small hallway between the living room and the bedroom, which is actually where we moved the crib, because our daughter sleeps better in her own space.
Giovanna stocked the fridge with lots of water and other beverages, left bread, crackers, condiments and coffee in the pantry, plus lots of towels for everyone. The apartment is super clean and Giovanna responds very quickly if there are any issues or questions.
The location worked very well for us– it is next door to the Archaeological Museum and the old city center, 25min walk to the central train station. This part of Napoli is much more lived-in than the grand seaside– there are several bakeries around the corner, lots of markets nearby on Vergine, plus a big supermarket (which is important when traveling with children). The main shopping/congregating area starts on Via Toledo, about a 15min walk.