I would very highly recommend Jacques and Janine’s place for anyone looking to visit Brussels. My brother and I stayed there for 2 nights. Jacques and Janine were there to welcome us when we arrived, and gave us comprehensive instructions about the apartment and also transport, things to see in Brussels, etc. We had our own rooms and the apartment was extremely well equipped. They had left us breakfast provisions, snacks, etc. The trams and metro were easy to use and it was only a short ride into the centre of Brussels.
We are also avid Tintin fans, and the apartment has many Tintin (and other Belgian comics) wall displays and many many books, which we loved!
We couldn’t have asked for a better stay!