Take the motorway A3 (Nürnberg - Linz) until the exit Hengersberg. Go in the direction of Grafenau and then to Freyung, always following the B533.
From Grafenau it is about 13 km to the hotel Bierhütte. Pass Grafenau, Lichteneck, Neudorf, Kapfham and Saldenau and you will go along a valley, where you will find the hotel on the left hand side.