The upsides are: Location: the flat is close to Porta Romana metro station (about 300m) which is 3 stops away from the Duomo. Communication with the host: Although we didn't meet in person, Sahar was always easy to reach on her phone and answered promptly all our questions.
Now the downsides, and I'm sorry to write that, but this is my worst Airbnb experience so far. Cleanliness: The flat was definitely not clean enough to be rented out. The blankets we had to use were full of dog hairs, which I think is unacceptable. I still have some left on my clothes. Also, it smelled like dog. Obviously a dog lives there.
Sahar has left us just two towels-one big and one small. So I had to use the small one for 4 days. No hand or face towels either. We also had big trouble entering the building every time we went out as the front door has some kind of a problem and it is a bit of a russian roulette when the key will work and when not. Overall, if we had known all that beforehand we definitely wouldn't have booked the place. It definitely needs some work done.