The flat was great for access to Bologna station - about a 15 minute walk. Bologna station is huge with links all over Italy. Therefore was superb for day trips or overnights of which we did many (eg Milan is an hour away by fast train, Rome in 2).The host gave us good advice about the station as it has about 22 platforms- some far apart, so we specifically checked out the station, and glad we did. If you book the longer train tickets in advance it is much cheaper. We used Trainline in the Uk.
The flat was very clean, and the host left a very generous welcome pack! It has a nice sunny terrace and is in a relatively quiet street, which is important as Bologna can be noisy at night (it is a student town after all). The flat is in walking distance of the whole of Bologna. The host arranged a taxi to the airport for us, and the flat was cleaned twice during our two week stay.
The host was very helpful on flexible check-in and check-out which helped enormously.