We stayed four nights at Robertos flat and overall we were pleased with the flat and its facilities. Lots of space and a nice balcony where we enjoyed our breakfast. However the kitchen didn't look like it had been cleaned for a while and prepared for our arrival (there was an old used coffee filter in the coffee machine and the washing maschine was full with clothes) Furthermore the shower was difficult to regulate between hot and cold water and the door to the shower couldn't close.
The neighbourhood is nice and only 15 minutes walk to the center. There is also a wonderful ice cafe just on the square next to the flat and a daily market on the square as well.
Would definitely recommend the flat to anyone wanting to visit Florence and wants to stay out of the most touristic hotel areas.