The apartment itself is clean and comfortable. The check-in was effortless, with detailed instructions on how to enter the apartment. There are 2 points that could be improved a bit.
1) The 3 keys on the keychain cannot be disconnected from each other. But you need separate keys to open the doors and one to activate the main power switch. So one can't leave the apartment without turning off the lights, leaving you completely in the dark during locking.
2) The Airbnb ad said that 'parking in the street is for free'. This is a bit misleading because the Airbnb apartment is located within the ZTL, a restricted traffic zone. You need to buy a pass (daily pass is 5 Euros) in order to access these zones. While figuring out this situation our host was not as responsive as we would have wished for. Other than that she was very nice and helpful.