Our stay at Paolos place was too short but very nice. The appartment itself is decorated with so much creativity, love and personality! The location is perfect - not far to walk to the centre but still quiet and with a balcony with a nice view.
Parking is a problem as you are not allowed to drive into the historic centre as Paolo told us, we ended up parking at the "Parcheggio in BOLOGNA PIAZZA VIII AGOSTO" which charges 20€ for 24h, which is a good deal and if you are careful you are not (accidentally) entering the limited traffic zone (ZTL) which will result most certainly in a fine. From there we took a taxi (8€ or so) but you could also walk for 15-20 minutes!
Paolo was a very nice, open, attentive and supportive host, he made suggestions for restaurants and offered to make reservations for us. He also helped us trying to figure out what to do if you drive into the historic centre anyways (which we unconciously did - the signs are not so easy to spot if you do not know what to look for).
All in all a great host, a great appartment, and a great city!