After much research, my top two chocolateries in Belgium.
Wittamer
Address: 12 Place du Grand Sablon, 1000 Brussels, Belgium
Phone: +32 2 512 37 42
Website
And of course, the Christian Dior of chocolate making…
Pierre Marcolini
Address: Rue des Minimes 1, 1000 Brussels, Belgium
Phone: +32 2 514 12 06
Website