As announced, here is the report of my field trip to rue Blaes. Most stores are open on Sunday. If you are in Brussels and feel like some real or window shopping, do not miss this area, also known as Les Marolles with also has a daily awesome open air market.
"A constant whirl of activity, the popular Rue Haute and Rue Blaes are thronged with the most unexpected bric-a-brac and decoration shops, carefully interspersed with typical and welcoming cafés and restaurants. Lovingly-prepared dishes are served alongside soups and soft cheese sandwiches. The “zwanze” is a must: once you’ve heard an absurd, incredible or surreal story told in the good old brusseleir accent, you’ll have reached the roots of the Marolles. All of this local tradition is further enhanced by the fantastic bric-abrac: the flea market that’s been held every morning for more than a century on Place du Jeu de Balle!"