I would say difficult to rate. There are two The chocolate company underneath the staircases of the…read moremidi-terminal in Brussels. Both carry a large variety of Belgian Chocolate and do this well (I mean selling it). Both will not get an extra price for atmosphere or store design (so only 4 stars).
Their approach is straight forward: You want chocoloate, truffles, pralines of Neuhaus, Godiva, Corne Port Royal, Galler and some others come here, you get it.
Order, pay, go - very good if you are late for the train