Location: Perfect for us. We travel a lot and like to avoid tourist trappy areas. This was a 10 min walk to main attractions but far enough out to avoid touristy neighborhood. Local restaurants and bars were trendy with a more SOHO kind of feel.
Cleanliness/Standard: Water damage in the bathroom covering ceiling and walls with shower leak. Otherwise very clean. Bathroom was only negative really.
Standard: I think this place has a high standard with nice interior and very spacious. Just needs some more drinking glasses.
Price: for what I have seen in Florence I think given location and space this is worth it.
Service: host was great and responsive. Only warning I would give is that if you arrive at night like me, you will have to either take an additional taxi ride or walk (with luggage) about 15-20 mins to the apt.
All in all a really nice experience.