I cannot remember where, I once read the real definition of 5-star-travelling: low cost, perfect accommodation as absolutely individualized and comfy, as well as local insider guidiance. How many stars are there in the world of tourism? I give Susanna an additional one to the so far maximum, as she really cares!!!
Airbnb is private and yet very professional. In some places, one is so professionally and discretely taken care of in a beautiful private accomodation that one cannot complain about anything - yet, as travellers are passengers, some of the hosts have seen so many of them, that they have developped a politeness that will not leave a lasting impression beyond superficiallity.
Susanna has truely kept the enthusiasm to meet her guests: Talking to her you will feel immediately at home, being her friend. Next to the absolutely gorgeous place, which is beside its superb location in the city, very well organized, supplying not only maps and house-rule leaflets, but also a first-aid-kit just in case and a leaflet with all emergency-numbers / hospital locations, close-by supermarkets and so on; Susanna is indeed interested in her guests and spending time with them. She will not bother with the standard-recommandations, but give the insider hints to the things you are personally looking for. In addition she organized a couple of joyful events, where she encouraged to join in. She offered that without any pressure or disappointment, if one would not follow the invitation. Clearly her service to provide her guests with this pleasure to get to know the diverse facettes of the Insider-Florence is not bookable. I can only say, follow her advices and discover the hidden treasures of the city, even if you think you know it already. If I ever get the chance to return to Florence, I'd love to stay at her place again!
To sum up: outstanding neighbourhood, outstanding architecture, outstanding interior design, outstanding owner!