Loved staying here, would definitely come back. Apartment is very close, if you walk to the corner you can see the Duomo. Hosts are extremely nice, accommodating, and responsive. It has a tiny elevator but several steps up into the building.
Pros: adorable, homey apartment, very nice owners who live just next door. The most thoughtfully prepared apartment we've ever stayed in by far. Selection of coffee and teas, spices in the kitchen, laundry detergent, clothes pins for drying on the clothesline, an ice pack in the freezer, books to read (including for children), flyswatter, shampoo, first aid kit, and other various items. Large refrigerator. Microwave, panini press, electric kettle. Couches are comfortable with pillows. AC unit in the living room and one in each bedroom.
Cons: a bit of a walk from the station, make sure your suitcase wheels are ready for the bumpy pavement. Table doesn't really fit five people, but there are six chairs available. Round staircase to upper bedroom is tight, if you're a larger size you should plan to stay on the main floor.