We spent 2 months in Annarita's place and had a wonderful time. It worked great for our extended stay. Since we were actually in both tourist mode and day to day living mode, we needed access to other resources like, additional cooking tools ( since we took some cooking classes ), an additional table for computers and Annarita supplied them. She also informed us on where to shop, get all the things we needed and volunteered information on what to see and do.
The apartment was sparking clean and was very comfortable, especially for the long stay. The location was excellent as it was just a short walk to the main tourist areas but in a residential area with good resources right around it. Just outside the building to the right is a coffee shop, lunch restaurant, grocery shops and one of the best dinner restaurants in Florence.
Of course, all of this applies to making your short term stays enjoyable too.
If we were to return to Florence we would not hesitate to stay at Annarita's place!