Niccolo was a great, attentive, and available, when needed, host. Apartment is located in the good area: 10 min walk to Duomo, 20 to train station. A lot of restaurants, cafes, farmer market and supermarket in the neighborhood.
Things you need to consider: you'll have to climb 16 very steep steps to get to the apartment, there is a step down from one bedroom to the hallway, the same from the main bathroom to the hallway (be careful at night). Second bathroom is a full bathroom, but tiny - anybody over 180 lb (~80 kilo) will have problem getting in and out of shower. Taking shower in both bathrooms simultaneously greatly diminishes water pressure.
Knowing all this, I'd recommend this apartment in a heartbeat.