We really loved our time in this apartment. We chose it because it's not to far from the train station but it's also very close to the Duomo, the big market etc so great Base!
The flat is really charming - very traditional style with the wooden beams in the ceilings etc. It's pretty compact but the main bedroom is big actually.
I stayed with my parents so three of us. One thing I have to say is that if you're on the sofa bed in the living room it can get noisy because the market stall holders pack up their stalls and pull them down the streets outside on wheels which makes a big noise (metal wheels on cobbled streets) My parents slept perfectly in the bedroom though which is back from the street.
As a host Paolo is extremely friendly and nice. He is very chatty both before you arrive and when you meet to get the keys. He gave us lots of advice about the area and was very easy to deal with. He's also a vegan like me so made recommendations for nice food.