I'd say go to the GW in Brussels itself or come all the way to Kortrijk to the Albion ( it is a little over an hour on train, but it's a good atmosphere ;D )
Other clubs in West Vlaanderen that aren't that bad are Spellenclub in Ostend ( all the way up to the coast, so that's probably a no no ), Black Border in Roeselare ( about halfway to the coast from Kortrijk, so still further )
Clubs in Oost Vlaanderen : Hermelijn in Aalst, GW in Ghent Thunderbolts in Ghent, probably more but none I can think of atm.
There is a club in Leuven, I think they're called Gaming Lords Leuven ( look up on Google t be sure ).
There are several clubs around in Limburg, but those I don't frequent at all, so no knowledge whatsoever.
Hope this helps ;-)
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