PERFECT location. Walking out the front door you will see the hoards of people waiting in line to enter the museum that houses Michaelangelo's DAvid (you can also observe them and hear them from your bedroom window); you are a 5 min walk from the Duomo and 10 from the Uffizi. For being a tourist (Which is what we all/most likely are), you can't ask for a better place to be. The flat itself is also really nice. absolutely spotless, with simple and perfect furnishings, a table for eating and a kitchen to cook if you'd like.
You may want to bring your own towel, or ask in advance, as I had to ask for one and then it was only a handtowel, that barely wrapped around my waist, not to mention covered anything.
If you're a light sleeper, you may not want the room, as the street is noisey. But, I also imagine that anywhere in this dense city and touristy area. I kept he windows oepn but slept with earplugs and was fine.
I was able to leave my luggage there for the day, after checking out, and come back later to pick it up, which was great.
Excellent value and I'd recommend it highly! Federica is very friendly and accomodating.