It is possible to reach Borgo di Pian di Molino by car; arriving from the highway E33, Parma-La Spezia, take the exit Aulla, then the street SS63 following the indication to Equi Terme. After the town called Gragnola continue along the same street; and after the fork for Cortila, take the right at the first group of houses (between the white house and the red one). You will meet in front a bridge from 1610 and after this, higher, on the right, you will see the Borgo where you will be received indicating your parking lot.
Borgo di Pian di Molino is reachable by train but less recommended because it would not help your transfers during the stay. It is possible to get the Swing, the regional train connecting Aulla Lunigiana area to Lucca and Pisa. The landscape is very suggestive and the trains are renovated. The train station you should refer is Gragnola: from here the Borgo is reachable with a 20 minutes walk.