As a family of 4 (with two teenagers) we really enjoyed staying at the apartment - three bedrooms and two bathrooms gave all of us the personal space we needed. We found the beds were comfortable - could hear a bit of street noise in the front bedroom (to be expected in such a vibrant city) but the other rooms were very quiet.
Location was close to all major attractions and it was easy for us to move around.
There was an info folder in the apartment outlining useful things like closest supermarket, hire car places and recommended restaurants etc (which we put to good use).
Barbara was just a call/message away and gave us great advice about days trips outside of Florence, helping us to find a private driver.
There is a washing machine in the apartment but no dryer - there is however a clothes horse to hang washing on. Alternatively a couple of doors down there is a laundromat.
Overall we loved our stay