Oh and watch your bags at Midi station and public transport from/to, lots of thieves about and the police don’t care (but it’s not as bad as Nord station which is a bit like Mad Max: Beyond Thunderdome).
And if you get a taxi into town from Midi (wise), don’t let them overcharge you. They’ll try. Stick to the mandatory amounts on the back of the driver’s seat.
Although taxis in Brussels are really cheap and a viable alternative to public transport.
Just watch the petty crime. It’s a nice place but they don’t have a handle on petty crime! Unemployment a massive problem in Belgium right now etc. Delirium is notorious for thieves, in particular, but I always go back.