The French bread is to die for, really the best of Brussels (and I'm French, so I know what I'm talking about)! Their pastries (3.10-4.50 approximately) are also worth trying, they are quite classic (Tatin pie, pralines, cream slices...)
Try their croissant (or couque as it's called in Belgium), I promise you won't be disappointed and be longing to come back asap! The place is easy to find and in a lively and nice neighborhood to stroll through when the weather is nice!
Their coffee is good also and you can have a seat and watch how the bread is cooked through an open window in the shop
Su: 08:00-13:30
Mon-Sa: 07:30-19:00