Andrea and his wife were very nice and pleasant hosts, taking care about everything, and our communication was really wonderful. Their apartment is quite new, spacious and comfortable, in a decent location, not so far away from Duomo, either by walk or by bus (stopping nearby).
The only thing which I would propose to be improved is internet, which is 3G and with a router which has to be restarted each time after approx.15 mins of non-usage - not so convenient and not so reliable, I must confess...
Apart from that, I would sincerely recommend this apartment to anybody visiting Florence, since it is really offering more than a satisfactory value for money.