Two of us stayed at Stefano&Giovanna's place over Christmas holiday for three nights. We enjoyed our stay thoroughly. The apartment looks even better than the photos; there are some stairs but very spacious and nicely decorated. There is a small balcony overlooking Saint Luca, and the kitchen is functional. It is also conveniently located on an interesting street and not far from Piazza Maggiore.
We met Stefano upon check-in, and he is very friendly. Also, during the stay, we had a bit of trouble with the lift and some questions about Bologna, Stefano&Giovanna responded swiftly to help us. He was also kind enough to let us try the olive oil that he made. Definitely recommend.