I would highly recommend this place.
The flat itself is in a great location, within a very close walking distance to lots of major tourist locations, the train station and there are lots of places for food and drinks very close by. It's very spacious inside, neat and clean. It has all of the amenities you'd need to stay for a few days, as well as aircon in both the bedroom and the kitchen/living room earlier. The bathroom is great too, with a really good shower.
Sandra herself is a really nice host too, and very helpful whenever you need advice/help - she helped me with making a booking at a restaurant as I cannot speak Italian. She's also very quick to respond to any messages, and also allowed me to leave my luggage at her house for the day until my flight as well as having a slightly later checkout time.
I would happily stay here again if I visit Bologna another time in the future.