Loved our bike trips on a boat in Croatia, hopping from island to island. Does anyone know of an organization that does this well in Greece?
You can rent and ride bicycles on the Greek islands but be aware that using them can be very difficult and unpleasant (and sometimes dangerous) because of the wind that blows there very frequently
Also to JoLui's response is the danger from motorists, Greeks and Tourists.
VBT has a good reputation: https://www.vbt.com/destinations/europe/greece/