This place is beautiful and HUGE!
Checkin was smooth and the host offered to meet us at the train station to walk us over! We had already spent 3 days in Florence staying elsewhere, so we thought it would be polite to decline this offer and - foolishly - find the place with Google maps ourselves... Do not make out mistake! The posting for the apartment clearly states that Google Maps will take you to the wrong place, but we didn't think to look over the listing and we simply put the address in. This made us 5-10 minutes later on top of a small train delay and the host seemed a little annoyed while checking us in, but ultimately took great care in showing us the ins and outs and even explaining how to run the washer and dryer (a great convenience for longer stays!).
We had zero issues with any appliances in the apartment and the shower was lovely. The kitchen was even stocked with coffee and some basics - enough to toss some snacks our even small meals together before heading out to explore for the day.
If you are wishing to explore all over central Florence, it is obviously more efficient/convenient to be placed centrally, near the Duomo. However, if, like me, you love to walk, then it's actually quite nice! We stayed somewhere central before this and it was actually quite nice to do both and walk some different streets. Plus, this place is so close to the train station - an easy walk, even with heavy luggage! Speaking of heavy luggage though - this place is 3-4 stories of dimly lit stairs up. Needless to say it is not handicap accessible and if you have a 50+ pound with you please be cautious or find a stay with an elevator if you are worried!
Street noise can get a bit loud at night and there was some neighboring construction/renovations that woke us up a bit early (closing all the windows as well as the kitchen and bedroom doors helped tremendously). The only other potential negative was that the thermostat had the batteries removed, so we had no control over the temperature (perhaps this was a seasonal practice, as the weather was usually cool enough to make this comfortable anyway after simply airing out the apartment).
Ultimately it was a lovely stay with no major issues!