We stayed 3 nights at Roberto's. It is a direct 13min bus ride from Firenze SMN and in a safe neighborhood. We didn't get to spend much time with Roberto, but he was easy to communicate with and stayed up late to check us in as our train was late. The place is clean and done up very nicely. Bathroom is large and shared but that wasn't a problem. Room was a bit cold but there were ample blankets. A comfortable stay overall.