Sara's apartment is very easy to find.We took the shuttle bus from the airport to the train station and walked from there to the apartment where Sara and her husband were waiting for us. They showed us around, showed us the nearest shops and restaurants on the map. It is perfectly located, very quiet, a 15-minute walk from the historic center. We bought the Firenze card, with free public transport, and were frankly glad that we could take the bus now and then.
We felt fine at our accommodation. It is quite dark, but I think most homes in Florence are dark. After the first night we did not have internet, but hey, we survived. The bed was good, the kitchen had everything we needed and the shower worked fine. The apartment shows bigger then it is on the pictures, especially the sitting room.