http://www.greenwich-cafe.be
If you walk out of the bar and cross the road there is another restaurant that sits on the pointy corner (it’s a junction of 5-6 roads so all the buildings come to a point) don’t know the name but ate in both when I worked in Brussels a few years ago. The owners used to go to each other’s bar to have a drink away from work.
If you want to push the boat out the here.
http://www.vertdegris.be
They may do cheaper lunch menus but I only went there for fine dining in the evening.
Whatever you do don’t eat at the places near the station where waiters wave menus at you.