Context:
The aparment is single-room, with a dressing room (not a closet, but a whole dressing room!) and one bathroom. We arrived in the evening and left on the next morning. We spent only one night.
Pros:
Communication is very easy.
You talk directly to the owner, so they will try to make things easier than if it was an agency.
The aparment is very clean (not vey common in my Italian experiences).
The shower is wonderful.
They are very nice.
The apartment is half-way from the train station to the historical city center (less than 10 minutes walking to each of them from the apartment).
Very quiet and well isolated.
We could leave our luggage once we had already left the apartment.
Cons:
Mattresses are improvable. Specially the one on the sofa-bed, because its bed base creaks as you move and makes some noise.
There's only one room, that works as kitchen, living room and bedroom. But I guess you already know, as it is on the description :)
Conclusion:
We spent only one night and were very happy with the place and the treat. Host were really kind and easy to communicate with. I do recommend spending here your time in Bologne