I loved Brussels and would go back in a heartbeat. I found the people very nice and helpful. I speak French which probably helps. It's a very walkable city and the public transportation is reasonably priced. While you are in town check out the Coudenberg museum. It's an archaeological site of the medieval Palais Royale and it's below the Place des Palais. If you can, try to time going to the Grote Markt at sunset as the light reflecting of the buildings is beautiful.
Insider Tip:If you get a sandwich with fries, the fries will be inside the sandwich, this is normal. There are cheap waffles near the Manneken Pis, and look out for comic book art on random walls.