Federico was a great host. We never met him but he was in contact the minute we arrived in Florence to make sure his colleague was there to let us in. We waited maybe 2 minutes and she arrived to escort us upstairs to the apartment. His colleague then showed us around the room, asked if we had any questions and then took out a map. She let us keep this map and pointed out a couple of supermarkets nearby as well as a couple of restaurants to eat at.
The first night we kept the windows open a little and it was loud at night, then again in the morning. We were prepared for this and we thought it was worth it given the prime location and the minimal time it took to get to major destinations/sights within the city. The next night we kept the windows closed and it was much better.
Staying in Federico's place (we thought) helped to give us the well rounded experience of Florence. His apartment makes you feel like you're a part of royalty with its space, high ceilings, decor and bathroom.
We had no need to reach out to Federico for anything during our stay as all items potentially needed were at our disposal in the apartment. I would highly suggest choosing Federico's place!