Floria was nice to wait for us while we hauled our trolley on the cobblestones from the bus stop. The flat was as described, very clean and had everything we needed. The kitchen is well equipped, Floria even left coffee and an espresso and filter, which was great. The AC worked well enough to keep us cool even at 37 degrees. We didn't turn on the TV much, but the WiFi was fast and stable.
The flat is noisy, but we expected that with it being right under the Duomo, and it didn't bother us. If felt lively. If you come to get rested, this is not the place to be, but if you come to experience Florence, it is the perfect spot, and I would recommend it.