We would not stay in this air bnb again. It is the definition of a catfish Airbnb. The location is fantastic 10/10, only about 200 meters from the Duomo but the apt itself is not as nice as it shows in the photos. There are multiple things in the apt that should be easy to fix that are still broken (Toilet seat, faucet, trim, bed). Though the apt was clean on arrival it is obvious once you spend 10 minutes in it that it is well used and the host is not keeping up with the upkeep as it has guests in it. The smell is bad but was not unlivable, we did stay our 3 nights and the smell diminished over time but upon entry it was extremely overwhelming.
We have stayed at multiple air bnbs during our 2 week trip to Italy but this will go down as the worst experience. If there is nothing else available you can stay here but if given another option I would go the other way.