Apartment is easy to get to from the airport - Alibus to Garibaldi then 4 stops to Dante on the Metro followed by 2 minute walk. Was perfect location for walking to various locations including Via Toledo (shopping area), Municipal (Piazza Reale and sea front) and North from Piazza Dante to the archaeological museum - a must after a visit to Pompeii - Campania express train from Garibaldi to both Pompeii and Sorrento.
The apartment was very spacious, clean and well-equipped; we did not do any cooking as a) far too hot and b) too many nice places to eat at anyway; we found our favourite, in the square for our morning espresso and some lovely restaurants locally for dinner.
Street where apartment is located is narrow, very busy and all life goes on there - fascinating to watch daily life going on from the balcony; glass of wine in hand from the little shop across the street (2 euros) - very nice.
We did not meat Mariano but I was able to contact him as needed and he responded promptly - arranged taxi back to airport for us as we had an early flight although Metro/Alibus would be ok for later flights.
Only down side was no air con and Mariano states this in the listing; I had overlooked this and assumed it would have AC. The free standing fans in the bedrooms did a stirling job but it was very difficult to sleep at times.
I love Naples and would recommend maybe visiting at a time of year when it is not so hot.
Mariano's dad met us at the apartment and, despite his English and my Italian, he got across the information needed and had even bought some vegan milk and cereal for breakfast; a very nice and thoughtful touch.
In one word - apartment is AMAZING as is Naples!!