The appartment of Jacopo is great! It is spacious, clean and comfortable; fits the description.
The neighborhood is quite clean and safe as well. It's about 20/25 minutes from the centre (Duomo etc.), if you take a tram (27) or bus.
Communication was really good, they always respond quickly!
Our flight was delayed and we arrived around 1:30 pm... they were still there to hand over the key!

Also, they were willing to help out with anything and provide information; great hosts!