Giulio and his mother are great, very kind people - ready to help when you ask but also respecting your privacy. The conditions were like in a 4* hotel, seriously. Not sure about 5*, never been there :) It was great to have a whole floor only for ourselves - equipped with everything you might need - from a small fridge and several kinds of tea and coffee to blankets, air conditioning and hot tube. Especially we liked the dining table and a kettle in the room - which is rare for Airbnb rooms (not apartments). The place is very, very clean.
Julio is a responsible and serious host, always ready to answer your questions. The location is also great - close to the tourist sites but in a quiet residential area, with a good supermarket nearby, just 20 metres away.
The only thing to consider - you should have a strong head. Despite all the warnings, you just forget about the ceilings all the time.