I highly recommend Anna's place to stay in Bologna. it's absolutely lovely, i stayed there for 3nighs in January and am pretty sure it's even better there during warm months, when u can relax outdoor at this charming patio. Apartment is nice and clean, about 20min walk from the center, but the area is so pretty that the walk is a pure pleasure :)
Also communication with Anna was great, we have no issues, she is adorable and very helpful person. If i ever be in Bologna again i will definitely stay at her's again :)