I've visited Bologna, my mom's home town, over thirty times. The recently renovated building, situated on via Rizzoli, between the two towers and Piazza Maggiore, is perfectly located. We were able to walk everywhere, even with 3 year old twins in tow.
The apartment itself is modern, clean, and extremely well appointed. Everything is brand new. Modern amenities (dishwasher, washer/dryer, large shower, wireless internet, satellite TV) helped us immensely (traveling with young kids is tough).
Federico is a great host: friendly and helpful but not intrusive. He provides maps, guides, and his own recommendations for the city.
Altogether, this airbnb experience was outstanding. We will definitely be staying here again and recommending to friends and family. Grazie, Federico!