Europe - Early-morning Brussels layover?

Apologies if this has been asked before - I haven't found it in search results.

I have a 5+ hour layover in BRU next week, sadly between 0515 and 1015 :( . Now I can head for one of the apparently unremarkable lounges in the airport but 4+ hours there are likely to drive me demented. Can anyone suggest a more stimulating alternative given the early hour (eg escape the airport for a couple of hours, take the train into the city, have breakfast in a characterful early-opening café, browse a food market, etc?). I have seen lots of good suggestions on previous threads about chocolate shops, bars, museums etc - just not applicable at 6 am...

Any ideas welcome - otherwise I'll resign myself to lounge limbo...:rolleyes:

Thanks!
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If you have never been to Brussel before, you should at least take the train to the Central station, and from there go for a short walk and visit the Grote Markt / Grand-Place. And I'm sure you'll find at least a few places that can serve you a coffee and breakfast at that time... :)

http://www.flyertalk.com/forum/europe/501613-what-do-brussels.html

We followed kahuna1993's advice (post #44) and LOVED Wittamer (http://wittamer.com/en/index.php) on 12 Place du Grand Sablon. ABSOLUTELY DIVINE. We had breakfast there and ordered the "le petit déjeuner" for 11.50 euro. It came with freshly squeezed orange juice (not as sweet as I had hoped, but it was good), espresso/tea/chocolate, 2 pastries of your choice, and two small chocolates. A bit pricey but notice the Jaguars, BMWs and occasional Ferraris parked outside so you know it is a top-notch place. :D Menu is here (http://www.wittamer.com/documents/en/cafe/Wittamer_cafe_livingroommenu_en.pdf). They open at 7 am (Except Mondays 9 am) so you can hop the train to Central and walk there, we went to the Grand Plaza then went over to Wittamer, nice walk although some of it is a bit uphill so be ready. If you are looking for small gifts there is a Wittamer shop next door with amazing "Macarons" (no idea how to translate it except they are good).

We were traveling with our 4 year old and she loved Wittamer's and the nice walk around the city. Wonderful 4 hours.

Excellent advice, Koby and GuyverII, thank you very much!