Our host gave us a most thorough briefing despite some difficulty with English. However, we were able to speak with her son(?) on the phone who had perfect English. The apartment was beautifully furnished, situated in a lovely ancient building within a few steps of the Duomo, with every modern convenience. We were supplied with two telephone numbers in case of any queries.
We had a wonderful experience and Caterina did everything she could to make our stay a happy one.
Access was by four flights of fairly steep stone steps so not good for disabled or very elderly. This was made clear before we booked.
If you are a light sleeper be warned that the recycling bins outside are emptied during the night, every night!
Having said that, this is a wonderful place to stay in Florence. You will love it.