Not a lot more i can add to whats already been said on the other reviews. The apartment is in an ideal location a short walk from everything. The main selling point is of course the view. Florence can get so crowded (go around the city before 9am!) that sometimes it was better to sit on the balcony and just look at it.
All my correspondence with Lorenzo was fast and positive and he was very helpful on arrival. The apartment was clean and pretty well equipped. If I had to find one negative (that is for ME, I realise it might not be for many people) is that the wifi is so slow that it is often pointless. It would often take minutes to download a simple website which made it difficult trying to plan the rest of my trip and it would have been nice to have an evening of 'low culture' eg watching an online film, after a day of high 'Art'? There is a huge TV, but I don't speak/understand Italian. Having said that I would 100% recommend Lorenzos apartment to anyone and would definitely stay there again. For the price there is no better place to stay in Florence.