We (couple, (30yrs old) have enjoyed our stay in Napoli very much! The appartment is just incredible. Everything is organized neatly, it was very clean and we felt like at home. 
Mrs. Anna-Maria P. has been very friendly and prepared several brochures for us to give ideas how to spend our time in Napoli. 
The appartment offers all the things you need to feel comfortable (kitchen stuff, pillows, music instrumentes, books, washing machine, air condition etc. and has a tremendous view to St. Elmo and is just wonderful to be at in the day time and evenings. 
As it is in the spanisch quarter it is sometimes quite noisy (motor cycles and cars) when windows are open but that didn`t bother us (we used air condition at night time). 
We stayed at the appartment for a couple of days to study but we also took day trips to the island of procida, the vesuvio, herculano, pompeij and of course the historical city centre of napoli. 
Close to the appartment (10 minute walk) is a wonderful market for fruits, cheeses and wine. So we spent romantic evenings on the terrace with a view of napoli, pasta and wine. 
Thank you Maria for this wonderful time, we will recommend your place to all the italy fans we know!