I strongly recommend the Lea's place. It is very quite, clean and close to the airport which you can reach by taxi (10 min) or bus (the bus stop for line 19 is almost in front of the building). With this bus you can connect to the line 944 to the airport, around 40 min with this option.
We found some fruits, water and juice left by Lea, small details that made our stay even better!
There is also a pizzeria just few meters away that made us very surprised about the fair prices and the quality os food/service, it is called Ciao Vip 1, next time in Bologna, even if we don't stay at the Lea's place, we will go back there again, it is perfect!
Thanks a lot Lea, Grazie Mille Lea!
Arrivederci!