Kloveniersburgwal 48 is known as the “Bushuis” (click for Google map).
Room G1.03: up main stairway to first floor, to the right, straight across open-plan meeting area, through purple door into back stairwell. Door to G1.03 is on your left.
My office is directly below the secretariat of European Studies at G2.03.
Office hours: Thursday 10-11 (on appointment)