I am from Napoli originally, and I return for visits as often as I can. We had a wonderful stay at Lucia's wonderful apartment and I can't recommend it and the neighborhood enough. From the architectural details of the apartment and the building, to the tasteful decoration and immaculate conditions, all the way to the comfort of being in the heart of the old city with many astonishing wonders of all eras, as well as bars, restaurants, and wonderful places for aperitivo... I can't speak highly enough. The apartment, with its stone-thick walls from the 1700's and terra cotta floors stays cool in the warm days (and I imagine very warm in the winter), and astonishingly quiet given the livelihood of the neighborhood just a few steps away.
Lucia herself is a wonderful person and attentive host who has many useful tips and recommendations (even for me who know the city fairly well...) We will certainly return, and hopefully for a longer period of time. Grazie Lucia, a presto.