Good location near the mall. As soon as you walk in, there is a ticket button, so press the red…read morebutton and then prepare to wait as there is always a crowd here. Nice thing is there are 5 counters full of folks working here are pretty fast and efficient so your number does get called pretty soon.
To get here via public transport, closest train station to use is Roodebeek. Otherwise you can park in the Woluwe Shopping Mall, where its sometimes easier to find parking spots than the narrow strip of parking in front of the post office.