Pietro was very responsive always answering very fast to our inquiries. We didn't meet him personnally but got welcomed by his mum. We were leaving in the evening and he didn't have any guests the next day so he left us stay as late as we needed. The flat is not in the the very center but it is well located right next to a tramway stop and 2 subway stops so that you can get about anywhere in the city within 30 min. So it was a really good base for exploring the city.
The place was very clean and matresses were comfortable. There is eveything one might need (including an iron board!).
In a nutshell a top notch host.
Very recommended.