I was looking for a place to stay for one night near the centre. For me and a colleague of mine, so I needed two beds in separate rooms. After quite a lengthy search, I found DOUBLE TWO DE' MAGNOLI in this really great lane, a stone's throw from Ponte Vecchio and leading up to Villa Bardini from where one could continue on and enjoy one of the most breath-taking views of the city.
In terms of accommodation, I could not find a fault, if I wanted. The rooms were neat, kitchen, bathroom, bedroom, small recessed sitting room with a comfortable sofa bed had everything you could possibly need. Giacomo is a very generous host, as he left lots and lots of stuff for breakfast, which was a welcome touch.
The lane is fairly steep and narrow with little traffic -- considering that only two minutes down the road you are on the Arno and the main centre bustle, with lots of activity and potentially irritating noises. Instead, up there in Double Two we spent a quiet night. Only the occasional car and pedestrians walking outside the door disturbed us (me in particular, as I was sleeping in the front half of the house, while my companion was at the back and was farther from the road).
Perhaps the only downside is that the ambient is fairly dark, as there are only two windows in the apartment, but that's due to the nature of the houses in this old location of the city.
Overall I would definitely recommend this apartment to anyone who wants to find a little quiet corner in the midst of Florence's noisy city environment. Will definitely go back there from now on!