Not a good experience for me. On the positive, I must say a clean and well-taken care of place, with details from the host ie. cakes and sweets which were most appreciated. Now, the place is indeed very small, and it is a basement. The yard is completely dark and the lockers are not easy to handle. Most important, the neighborhood is dodgy and quite far from the centre. I had a rough time going around on my own and it was definitely not what I needed in my holidays.
Regarding the host, I feel she could have shown a bit more interest; a) there was no compassion when I described her an unfortunate incident during my first night b) when I asked about the way to go to the airport very early in the morning , she sent me a taxi website - which turned out to not serve people with foreign numbers - and fortunately I found some locals at a cafe who were kind enough to prebook a taxi for me.
Bottom line, if you travel on your own and want to visit Bologna, choose a place closer to the centre, you will enjoy the city more.