My friend who was staying with me started taking photographs of the place as soon as she entered the lovely courtyard, let alone the flat itself: this place is truly unique and special. There's a 6-7 meter deep well in the room (covered with glass, don't worry!), bits of antique brickwork on the ground under glass and other curiosities. We were a bit worried about the damp smell reported in other comments before we arrived; it is there, but it is really minor, and one gets used to it quickly. The space is nice and cool which is important in a hot place like Bologna. Moreover, at night it's really dark and quiet, which matters a lot to me as I'm a super sensitive sleeper: I didn't even need to use my earplugs and mask! Carlo is very nice and welcoming, he shared some tips re local dining, drinking and shopping and treated us to a bottle of wine upon arrival. One thing I'd recommend is to take some anti mosquito products as there are a few of those here, like in most of Italian places I've stayed at. Overall, I can't wait to go back to Bologna and to Carlo's!