Mauela's apartment is lovely, it's spacious, modern and really feels like home. Although I didn't meet Manuela herself (her husband and adorable children met me for check in) she was always available via text for any questions I had and was very friendly and helpful.
The apartment is in the historic centre of town, close to lots of sights, restaurants, shopping, and transport. The seaside promenade is an enjoyable half hour walk away, where there are more restaurants and incredible views, including Mt Vesuvius.
The one negative of the apartment would be the shower, very little water pressure and temperamental hot water, but this is only one slight problem from a most enjoyable stay and I would happily stay again if ever back in Naples.