We had a great stay at Stefano's appartment, it is well located in the centre of Florence.
The appartment was stylishly arranged, the kitchen was equipped awesomely for a group of ladies who love to make local specialities themselves.
Two bathroom also help greatly when there are more people preparing for sightseeing every morning :)
However, one of our group, who is not used to city noise complained a bit about it being loud - the bedrooms are on the side of a small, narrow street, which seems to resonate the noise whenever car/scooter/person passes and unfortunately it happened quite often late in the evening/night both on weekend and weekdays of our stay.
Then again it is a flat in the centre of the city, so it should be obvious you can't get countryside dead-silence there.
Nevertheless, we totally recommend the place and the host!