We had a great stay at Olimpia's apartment for our vacation. We spent our days visiting nearby towns, making road bike trips, and enjoying pasticceria and restaurants nearby,
Olimpia is helpful, always reachable and speaks English very well. Apartment is quite dark, but cosy nonetheless and the two 2-p-beds sleep well.
Our favourite daystart was having coffee and dolci at pasticceria "Centro Storico" in the nearby Chianciano.
The apartment lies on a "strada bianchi", but well drivable with regular rental cars, also after rain.
For racing bike rental/routing ideas, check out the website of Cicloposse, in Pienza (25 min drive by car), great bikes for passionate and helpful people.
We flew in on Rome, more affordable and almost as close as on Florance.