My 15 year old son and I took a quick trip through Tuscany and Liguria in late July 2011, and stopped here overnight based on a recommendation on TripAdvisor. Our goal was to hit the hot springs in nearby Saturnia, and we wanted an easy location from which to explore the area.
The staff at Hotel Rossi were very helpful and spoke enough English (although I speak Italian, which helped). The hotel entry & common areas, plus the room, were very clean and fresh and in good shape. Rooms have AC, which is helpful in the summer months. We were surprised that the room was so spacious. I liked the central location of this place, right near the entrance to the old town, which is an easy walk from the hotel. Heading out from here to Saturnia or Pitigliano is a breeze.
The included breakfast leaves a bit to be desired, but they do get credit for trying hard. I suggest you skip the breakfast and catch a cappuccino and cornetto at one of the nearby bars.
I would definitely stay here again. If you're looking for more charm in the area, I suggest you check out the many B&Bs in the countryside.