I spent 3 days in the studio apartment, very well located in the spanish quarters (practical to visit every part of the city and not far from the train station with the metro).
The apartment is very clean and sunny because it's on a high floor with a beautiful rooftop view of Napoli, there is everything needed to cook simple things.
In summer the fans are also an indispensable addition :)
Rosella, who took care of my arrival, was very helpful during my stay.
I'd 100% recommend the apartment for 1 person or couple !