We often use this location. It is the same building as Brasserie Lipp, The entrance is on the right side of the building. You need a code to enter the building. As a participant, you receive a reminder mail which includes the code!
You can walk from Zurich main station in about 10 minutes, or use Tram Stops Rudolf-Brun-Brucke or Rennweg-Augistinergasse.
Parking is available at the Urania Parking Garage. All day parking is CHF 45.00.