After spending two weeks hiking in Cinque Terre and hopping ferries on Lake Como, I was ready to relax with friends on a secluded agritourism farm in Tuscany. From the sleepy Sinalunga train station, I traveled in a sleek Italian sports car along narrow country roads that dipped and curved abruptly around tiny hamlets, walled estates, olive groves and vineyards. Porcelain-white Chianina cattle grazed contentedly along the road sides. Red poppies and mustard-colored rapeseed covered the rolling hills as far as I could see, interrupted...