A small nice apt in the very centre. Clean and comfortable. In a great location, very close to University subway station. The district is overall youth and student, cool.
Federica met us and showed everything. Excellent communication: described what to see, to do in the city and where to eat. Plus ordered a taxi to airport with fixed price. Sweet!!
The only small disadvantages would be next:
Noise from the streets at nights - but I guess that's how it's everywhere in Napoli if your windows are open.
And too hot without air conditioning - but we knew that from the beginning and still chose the apt.
It's just it was very-very hot in Napoli overall during our stay. It's good there was a fan, it helped a bit. Yet it would be better if we considered renting a flat with air conditioning - just fyi.