The location is absolutely fantastic - mere feet to the Duomo, though if you have a lot of luggage, note that the taxis won't be able to pull up to the front door because of driving restrictions. The space itself is small and clean and well-kept - the only possible complaint may be some mold around the shower. As others have noted, the apartment is cold so in colder months, make sure they start the heater for you in advance - it took around 12 hours to heat up the space while we were there. We also had a very unpleasant experience getting keys to the apartment from the woman who is supposed to let you in - the train we were on was delayed due to some technical difficulties and though we emailed her continuously about it with updates, she was extremely rude and wouldn't come to give us the keys when we arrived because she was having brunch at her house - we ended up storing luggage at the train station for an extra $50 and having to go back and forth from the station until we finally got AirBnB involved and the agent contacted the owner of the apartment directly. Other than that unpleasantness, we enjoyed Florence very much and the location was fantastic!