We had a great stay in Caterina's place. It's light, clean and modern designed and has a great location in Bologna. However it is not a private housing as we thought (maybe we misread), rather a hostel with 6 apartments with a shared kitchen. It worked out great for us, but if you expect a unique home feeling, this is not the place (the walls are a bit thin so you can hear your neighbours). Caterina and the rest of the staff were very open, helpful and warm. Our room was modern, well equiped with a nice bathroom, fridge and tv. However there was no escape route (only a high ceeling window) and no smoke alarm or fire extinguisher in the room, which made us feel unsafe during our stay. They should consider investing in such equipment for safety reasons.
All in all, a very clean and modern hostel with a great location.