Mains D’Oeuvres, St Ouen
From Hackerspace Brussels
nice art space near porte clignancourt, just a 5 min walk north.
has a great venue on top of the building: the 'startrek' room (http://www.flickr.com/photos/gael/2187988606/)
That's where happened Hackito Ergo Sum 2010 : http://hackitoergosum.org/