Some of my favorite ones are:
Notos (very fine Greek restaurant)
La Manufacture (in the old factory of the famous Delvaux handbags)
Bon Bon (my number one! but not in the very centre of Brussels)
I hope this will help.
Eric about 10 years ago
Go on the website:
http://www.resto.be, you can find all restaurants in Brussels.
It depends on budget and type of restaurant you want but some of my favourites are:
Midi Station: http://www.midistation.eu/
(Next to the Midi Station in Brussels, not the best neighbourhood but very trendy place)
(Excellent food, on the Toison d'Or (nice shopping area), romantic)
Le châlet Robinson: http://www.chaletrobinson.be/
Very cool place to go on a Sunday afternoon.
Belga Queen: http://www.belgaqueen.be/
Very nice and trendy
If you want to eat real and fresh Belgian food !
If you give me some more details about which "type" of restaurant you would like, I will give some other places to go.
G almost 10 years ago
For real belgian food, try, 't Spinnekopke or Viva m'bomma, reservations are needed in the weekend, try resto.be. There is a restaurant on top of the muziek instrumenten museum ( mim) or music instruments museum. Not sure about the food but the view is incredible. about 8 years ago