I stayed in Claudio's beautiful apartment with my friend for a few days. It is a very clean, comfortable and stylish space and it was a great base for our weekend. Walking to the city centre takes about 40 minutes (we chose to walk everywhere) but public transport links are great, especially as the main train station is so close.
The sofa bed was very comfortable, and we enjoyed chilling in the apartment in the evenings, watching films on Netflix with a glass of wine.
Unfortunately we could hear the neighbours upstairs most evenings but I think this is only an issue if you are a light sleeper.