The apartment was great and so spacious! The location was also perfect if you want to stay away from the tourist downtown (which we did!) and stay where the locals live. It was walking distance to all of Florence, had a great square a few blocks away, and some amazing restaurants nearby. As others have mentioned there are stairs to go up to the unit, but this wasn’t a problem for us, even with a baby and stroller.
We did have an odd exchange with the host where we had to our 20 euros more to have the third bedroom made with sheets and extra towels brought - even though we advised we were 4 people. So I would ensure you clarify that you want all the rooms made when you book the apartment. Other than that, the location, size, and comfort of the unit was perfect!