driver/guide for Nafplio

I would suggest that you e-mail your hotelier ... assuming that you are not looking for a car/driver who also is licensed to guide you inside anncient sites & museums (that's a separate, costly category), but someone w car who'se knowledgeable. I think you'd do best with a hotelier who knows the locals -- may even have a relative w. car-for-hire, a nonprofessional ... very likely to b e much more affordable. (U would of course check that such a person had appropriate insurance).