I loved every second of my staying in Brussels, also because I had a home there. :) Marc answered all my questions and helped me to get my sense of orientation back. The apartment was fantastic and perfect for me but I think it would work out also for two people. It had practically everything... the kitchen is well equipped, there is a coffee machine with coffee and so on.
The location is more than awesome. I mean, a quiet pedestrian zone just minutes away from... everything. The main railway station is 5 minutes away, the famous Grand Place 10 and Sablon church is just around the corner. Thumbs up!