We had a wonderful short break in Florence and thereby the apartment of Luca has played an important role. We liked it very much and have felt very comfortable in it.
You can not live more central in Florence, right by the Ponte Vecchio. On the third floor of an older apartment building overlooking the bridge, the river and on the opposite the Uffizi. Really great! You are in the middle of the action, but you could withdraw at any time.
The apartment is older (not the furniture) but full of charm, the wall paintings of Tuscan countryside, we found great.
And Luca himself, our host, was very very nice and extremely helpful. For my wife's birthday, he got me (secretly) flowers, cake and champagne.