Here are the maps of the trip (Courtesy of my friend Raúl). There are hotels mainly in the villages of Lerma and Covarrubias. An alternative to the hotel are the rural houses ("Casas Rurales"); I was in the rural house "El Batán del Molino" (highly recomended) located in the village of Quintanilla del Agua, at 10 KM from Lerma, road Lerma-Covarrubias. Included are some photos of this "Casa rural"; rural house phone numbers: (+34) 947174715; (+34) 609588734.