What a lovely studio apartment! We spent a week in Bologna for vacation and this place was perfect for it.
It is located right outside the city walls by Porta Maggiore, so to enter the Centro Storico you just need to cross one street. For longer trips, a bus station is right outside the door.
The apartment itself is in splendid condition and surprisingly spacious. The interior is beautiful and very clean! The layout with the gallery and the bed upstairs is quite charming. If you arrive during the hot summer months you'll be happy about the two air conditioners.
On top, Elena is quick to reply and very friendly. She solved a small issue we had with the WiFi promptly.
All in all we can recommend this apartment strongly and would come back any time we are in Bologna. In my experience such a good apartment for a fair price is hard to come by on the highly contested accomodation market this city.