My boyfriend and I stayed at Barbara's flat recently and LOVED it! It is in a perfect location, literally in the center of all that you need to do in Florence. We walked everywhere within minutes. It's a few minutes walk to Santo Spirito which has lots of cool bars and restaurants, a few minutes walk to Piazzale Michaelangello which is a beautiful lookout over the city. And a few minutes across the bridge to the Uffizi/Duomo etc.
The apartment is actually much bigger than ever the pictures make it look, and we had everything we needed. Barbara was amazing and kind and greeted us with lots of recommendations for the city, and all of them that we tried were amazing. The bed was comfy, and very warm up in the loft. We would love to stay there again if and when we go back to Florence! Thanks Barbara!!