My husband and I did a two-night stay in Brussels, and stayed at Gavin's apartment. The location was excellent...close to all the main sites in the city center. Everything was a 5 -15 minute walk away. Check-in was easy. The apartment was gorgeous and well appointed. We would definitely stay again if in the area.
Just some notes: The apartment is on the top floor of a narrow older building...Be prepared to climb and we were glad we packed light. Helps burn off some of the calories from the great food nearby. Also, we went during the weekend (Friday and Saturday night) in August, and Brussels nightlife was in full swing, so it can be a bit loud for any early and/or light sleepers unless you are out enjoying the nightlife yourselves.