From Innsbruck take the Brennerautobahn to Schönberg (just after the Europa bridge). Take the Stubaital exit and continue towards the Stubaier glacier. After Fulpmes and Neustift smaller villages follow (Krößbach, Gasteig). When you get to Volderau drive over the small bridge and you'll see the green sign on the left hand side.
From Innsbruck railway station take the bus to Volderau. Approx. 200m back the way you came you'll see our green sign on the right hand side.