All in all a very good flat! We've been welcomed very friendly and felt confortable for all the time we stayed in Roberto's flat. It's a clean and nice room with a big bathroom and a wonderful living room. The balcony has been our favorite, breakfast and dinner over there is very nice! So I can highly recommend this place for a stay in Florence. It is not directly in the center but it is easy to take the bus or walk by foot in a short time. The bus station is right in front of the houses door.
So we had a very nice stay, thanks for that! :)