I booked Daniela's apartment one day prior to our arrival in Florence - a spontaneous 'we-have-some-time-off-but-the weather forecast-at-home-is-crab' trip.
In spite of the short notice, Daniela responded within 15min to any query. Within an 1 1/2 hours, agreements were in place - including our out-of-hours arrival, which Daniela kindly adapted to.

The apartment is exactly like depicted, very clean and the essential facilities work well (bathroom, water boiler, fan, Internet, etc).
Furthermore, Daniela provided us with teabags, coffee, breakfast items - a curtesy that made us feel very much welcome.
On the day of our departure Daniela agreed on postponing the checkout time to 5pm...what a relief to have the apartment at our disposal, since the alternative would have been dragging along our luggage on a very hot day.

Although we never met Daniela in person (a kind friend of hers, Emerson, both delivered and collected the keys at the apartment), she was definitely accessible by email/message.

I highly recommend this apartment, which is placed within walking distance from all the sites (1,5km tops) - but in an local area south of the Arno River, where all the local restaurants are. I would book Daniela's apartment again.