Address: Gallitzinstraße 1, 1160 Wien
By public transportation:
Tram 2, 10 or 46 to Thaliastraße/Maroltingergasse, then you just walk west on the Thaliastraße until it becomes Gallitzinstraße.
Subway U3 oder S-Bahn S45 bis Ottakring, from there you can also walk down Thaliastraße until you reach the Bockkeller.
> Map of Bockkeller location can be found here.