I would not know anyone in Brussels, who could guide - basics! - in e.g. Hungarian, Romanian, Polish...
Tourist groups usually accept English, or German, but often part of the group has to get an improvised translation by a co-traveller.
I now need a guide to lead some Hungarian soccer players around.
For this, I sent a message to Zoltan and Laanna, but that is merely poke-and-hope. If you know someone (or are!) somehow experienced in guiding friends, family or colleagues around in Brussels in any weird language, please contact me!
Paul, a tourist guide for Belgium, NL-FR-DE-EN