We met Antonio in front of the apartment around 6pm where he let us in, gave us the key and explained everything to us. He even gave us a short overview of the history of Florence and a lot of tips on what to do and where to get a bite to eat and to drink which was great!
We went to a wine bar he recommended the first night which was really really nice, tried the Florentine steak at the restaurant he recommended (delicious!!!) and went to the ice cream place he talked about (also delicious and right at the riverside). We can definitely recommend taking the trip to Fiesole to get a beautiful view on the city and the whole valley from the monastery.
All in all, we had a great stay (even though the Uffizi Gallery was closed because of the heat :( ) and we can only recommend staying at Antonio's place!