The apartment is in a fantastic location. No complaints there. It was slightly confusing to find due to the odd numbering on houses, with friendly locals directing us up and down the street before we bumped into Melania who guided us there (for future guests, it's a red building with an iron gate next to a small square).
It is an easy walk to any of the main attractions and the main walking streets. It is a very spacious 3 bedroom apartment, but 2 of the 3 bedrooms are "joined" in that it is a loft style arrangement with one double bed upstairs and one double bed downstairs. The apartment is recessed from the street and behind security gates so there is some noise protection compared to other Naples apartments, however we still found it a bit noisier than what we are personally used to and needed earplugs to sleep through the neighbourhood noise. Our kids were in the joined loft bedroom and despite usually being light sleepers they slept through the night so perhaps that bedroom is more soundproof. The apartment is clean, spacious and though lacking in charm it is great for tourists exploring the city. Communication with Melania was good & fairly prompt (in Italian, but nothing Google Translate couldn't help with).