Get out at the backside of the station (Kantersteen) and go straight through the Galerie-Ravenstein. Continue walking straight forward, go up the stairs and you end up in the Rue Royale. There, walk through the Parc Royal, go straight forward along the rue Lambermont, cross the inner ring and you reach Rue Belliard.
Go to the metro line 1 or 5, get out in Arts-Loi, follow the exit to Avenue des Arts and keep your left-hand side. Walk on to the crossroad with Rue Belliard and turn to the left. You will find us at number 2 on the left-hand side.