By public transportation you may find it easy to take the trolley “Straßenbahnlinie 38”, and get down at “An den langen Lüssen” (last before last stop to Grinzing). Then you need to walk approximately 850 m (a half mile).
Coming by car using your navigation system please enter “Stefan-Esders-Platz, 1190 Wien“. Using the correct postal address “Ettingshausengasse 1, 1190 Wien” you will be misled by many systems via the Aslangasse to the Kaasgraben Church. Aslangasse however is a dead end street for cars.