We really enjoyed our stay at Francesco's on via Della Scala. There sure are many steps to climb to the 4th floor flat (as very well advertised upfront) but we thought the extra workout after an evening of eating and drinking was a good thing... Getting large suitcases up and down the stairs can be a challenge but suck it up!
The location is fantastic and the price fait. The flat is a short 10 minute walk from the train station and there is a very convenient baggage depot just a few door from the appartment. If you want to rent a car to explore the Tuscan countryside, the National/Alamo car rental outlet is one block away, also very convenient.
There is a nice local pub downstairs with a good selection of taps, mostly Italian craft brews which were a nice surprise to this Canadian bee afficionado! You can walk to the historic area in minutes and all of the maim tourist attractions and hundreds of restaurants are within 20-30 minutes on foot.