From Frankfurt take the A66 towards Wiesbaden. At the Schiersteiner Kreuz, turn off the A66 onto the A643 towards Wiesbaden Dotzheim. Follow the road towards Dotzheim. Turn left into Erich-Ollenhauer-Strasse at the first traffic lights. After about 200 metres, building number 211 is on the right hand side of the road in the direction of travel.