You can’t find a better location for touring Florence!
As mentioned in the listing and reviews, the apartment is on the fourth floor. There is also a staircase going up to the bedroom. If you are going to be climbing bell towers and touring around Florence anyway this shouldn’t be a problem. If you have mobility issues I’d look elsewhere.
If you are planning on arriving very early or late for check-in I would suggest getting in touch to coordinate. We did not use a “smart lock” to check ourselves in, but we’re given keys when the host(s) met us at check-in.
Overall happy with our experience. Great little place for a couple or two close friends.