Paola's place is very unique and comfortable. The AC is a welcome addition in the hot days in Bologna. Centre starts after about 10 minutes of walking. Be wary that you need to climb quite some stairs and very narrow final steps which may not fit very large suitcases.
The only downside was the breakfast, which was different than expected. Maybe good for some people, but I preferred to eat breakfast outside. Overal, good stay for the money!