From the motorway:
Take the exit "Köln-Messe", and continue in the direction of "Deutzer Bahnhof", until you reach the "Deutzer Brücke". In the "Pinpinstraße" you take the 2nd street on your right hand side (between the hotel Intercontinental and hotel Aral-Parkhaus). The hotel is situated in the street called the "Grosse Sandkaul".