We had a great experience altogether during our 2-day stay. The apartment has a great location for exploring Florence, with walking distance to all the major sights. The apartment was very neat and clean, and larger than expected.
Vittoria was perfect as a host, always accessible and easy to communicate with. We had a rental car and she helped us find a spot where we could leave the car during our time there. She even negotiated a special price for us at the garage. One should be aware that driving in central Florence is tricky, and parking is expensive. Be adviced that Google Maps do not show the correct location of the apartment on Costa San Giorgio.
All in all we had a great stay, and our only regret is that we didn't have more time there. Definitely want to go back.