Time:

From the Hauptbahnhof, look for the Tram Number “11” in the direction of Lake Zürich
Take the Tram from “Bahnhofstrasse” to Börsenstrasse (total 3 stations)
On exiting the tram, on the corner, is the ZKB Bank building
Turn left and follow Börsenstrasse for 20 meters until you reach “Fraumünsterstrasse”
On the corner is the Metropol Bar/Restaurant