When In Westbahnhof, take the escalator, following signs to Mariahilferstrasse. Take the exit marked Aüßere Mariahilferstrasse (to your right) – Mariahilferstrasse is the street to your left. Turn RIGHT onto Mariahilferstrasse and walk a few minutes. Take your second left onto Haidmannsgasse (there is a repa copyshop on the corner). Take the first RIGHT – you made it! We are at Robert-Hamerlinggasse 24.