This place is great, but some caveats:
The good:
Ada is a fantastic host and very accommodating. She met us for an early check-in and saved us from walking around with luggage.
The terrace is to die for. The view is simply stunning and a great place to open up a bottle of wine and drink at the sunset with the Duomo as a backdrop.
It's central to Florence and getting around is easy.
Decor is also great with nice styling.
What are the caveats then?
The stairs are no joke. Even for active people like us we were dreading it. Not a killer, buy worth noting. Still worth it for the view.
The shower wasn't the best, heat went on and off. Pressure was like nails.
Given it all, I wouldn't hesitate to book this place as long as you are okay with stairs/shower.