Could not recommend Marc and Katja's place enough!
The apartment has been decorated with taste, it comes fully equipped (incl a Dishwasher, internet - good enough to work from home -, television, ect...), and it is incredibly quiet with lots of light.
In addition, Marc, Katja and their 2 kids are incredible hosts, very friendly and responsive; we felt right at home.
We will definitely look at booking this place again if we're ever in Brussels again.
Thank you!