The flat is amazingly comfortable and cozy. Everything you might need for a one-week stay is provided, especially the kitchen is very well equipped and you can eat beneath the trees in the courtyard.
The communication was freindly, easy and clear.
Inside the flat, it's quiet; outside, you might hear some noise from the neighbours or from the street, but it wasn't disturbing at all.
The place is just a few steps from the old town and it's easy to get there from the main station by bus. Also, there is a grocery store close by.
In short: A great location for a stay in Florence!