This review is in two parts because there are pluses and minuses to this flat.
Positives- location location location. It is minutes from everything. The Duomo, the river, the Uffizi gallery. It's a great neighborhood too. Lots of places to eat including the best sandwich I've ever had. The apartment looks exactly as the pictures show it. Bright, clean and spacious Nice balcony to sit out on, decent bathroom and full fridge and stove. Many many things to love.
Negatives: Consider these advisories not necessarily negatives. First key pickup and drop off is at a 3rd party location about 1.5 KM away. An easy walk or taxi ride, but an additional one you need to plan for especially when leaving. If you come with large bags then you will also need to use the bag check at the train station next door if you arrive before the very strictly enforced checking time. Again not a problem if you are prepared but rather unpleasant if not.
Second while the flat is listed as a 2nd floor apartment, if you come from North America you may not realize that is much higher than you assume. Fifty Eight stairs to be exact. Hauling the bags up and down might be a challenge to many people.
Third and finally be aware it gets Very loud at night between midnight and four AM. Right under the bedroom window people line up for something (food??) If that bothers you stay away.
Overall I loved the location enough to put up with the noise and the steps.