Sofia - Marco's friend met us, she was super friendly and nice. Location is good. However, that is historical center and there were a lot of tourists and homeless people around (and their things). But it was nice to see the city from that side. District Chiaia is more beautiful, calm and clean.
Flat was super clean. However, mattress in the bedroom was old and and I fell into it from 1 side, then had a back pain. Same for sofa, one could fell into it. For short stay it is ok, but for a long one - it is an issue. Wi-fi connection in the bedroom was poor, so I had to seat in the kitchen to work :) Speaking about kitchen there weren't enough kitchen utilities. So if you wish to cook at home, take this into consideration. Thanks a lot to Marco and Sofia for our stay! With some small changes flat would be perfect!