We had a wonderful time in Bologna while staying at Diego's apartment. The easy check in and out worked perfectly. The electronic key is awesome!
The walk from the train station is fast and almost completely under cover thanks to the cities many porticoes.
There are plenty of food and drink options around the apartment and the city center is a short walk away.
If you plan to cook (as we did) there is a grocery store less then 5 mins walk and the apartment has every thing you need (even sharp knives).
The air-conditioning worked great (it was 90° f the weekend we where there)