We arrived to find we had made a mistake booking this apartment. We wanted an apartment to ourselves. What we found was that we had booked a room in a shared apartment. This is only clear if you take a very good look at the listing's description.
The dining room with dining table pictured on the listing contributed to the assumption that we were booking an entire apartment. In fact this table serves as a kind of reception/office in the entrance area. Not a place you would take a meal.
There was a very bad smell coming from the drain pipes in the bathroom. We told Alessandro immediately. After two days when the smell didn't clear up, he offered us a €60 discount via airbnb resolution service, which apparently was just to keep us happy until departure. He cancelled it the next day.

There is only one window in the room, which opens up above the kitchen of a busy restaurant, so unfortunately, smells on that side too.
Overall, the location of the apartment is excellent. It was very clean and it is pleasantly decorated. However, if you are sensitive to smells or like to have the window open, this is not the right apartment for you.