Who likes to look at stones is right here. Beautiful, medieval village with manageable center. 3 or 4 cafes and shops, but a great view of the plain.
It can be quite fresh, especially before Easter, cycling is a challenge, but nice!
Later on to Bolgheri or Sasseta.
The road quality corresponds approximately to the German dirt roads, the local drivers keep distance only when they have to, overtaking is apparently always space.
So think and guide yourself! (seriously: the worst are the tourists in the cars!)