I had a really good time at Alessandro's place; the location of the apartment is really good (right at the edge of the Sanità neighbourhood -- one that is very Neapolitan, and houses some good salumeria, cheese and bread shops, delis and vegetable markets, as well as the famous pastry shop Pasticceria Popella). I was also able to walk around pretty much the whole city from this apartment, though it is very near (<~10 min walk) to two metro stations on L1 and L2 and there is a 'tabacchi' right around the corner to easily buy tickets for the various transport systems (bus, metro, funicular). Additionally, getting to and from the airport is very easy, and cheap(!), using Bus 182 which stops right by the Archaeology museum (~5 min walk) -- this avoids having to get the more expensive, and less convenient, Airport bus.
There are many of Napoli's famous landmarks/ attractions right on the doorstep of the apartment. Being in a more residential neighbourhood you feel right in the thick of it, and experience a true version of Napoli right away -- I felt very safe in this neighbourhood too, often coming and going late into the evening. There are also many good places to eat locally -- I would recommend 'Taverna Luciana' as a good local place for supper.
Alessandro was also very kind and helpful in providing many good recommendations for places to eat (pizza, pasta, and seafood), drink, and other attractions both locally, and across the city as well. Alessandro is a great host, and was very communicative/ attentive. I had no issues whilst I was staying, but I'm sure he would have sorted things if need be.
The apartment is presented in a very clean and tidy way, and is comfortable -- though I would echo some other reviews here in that it is definitely lacking in any natural light, and you need will need to use the 'dehumidifier' operation on the air-conditioner much of the time (there is a slight damp issue). I would have liked to spend more time in the apartment, perhaps to cook some of the wonderful produce of the Campania region, but I would more recommend this as a base to go out for meals, rather than cook and/or stay in of an evening. The kitchen is very functional, though minimal in equipment; the apartment also lacks a sort of 'homeliness' feeling, so we opted for going out most evenings.
TL;DR,
- great location, whole city is easily accessible by walking (but bus, and metro right stops nearby);
- in a real, Neapolitan neighbourhood (good food, and grocery shopping nearby for meat, cheese, vegetables);
- near to local and national landmarks/ attractions;
- clean, tidy apartment, functional kitchen, but not super 'homely;'
- Alessandro is a great host, and provided many good recommendations!