The Workshop will be held at the Faculty of Economics and Business at the University of Barcelona, in room SALA DE GRAUS.
The complete address is:
Avinguda Diagonal 690,
08034, Barcelona (Spain)
See on the map here
The easiest way to get to the venue is to take the green metro line (L3) till Zona Universitaria station. Also the orange metro line (L9s) connects the aeroport directly to Zona Universitaria. More information about Barcelona metro lines in this link.