I enjoyed my stay in the apartment. The layout is unusual, but there is plenty of space, and there is every kind of equipment you might need for cooking and living.
The location is excellent. It's just a 10-15 minute walk to the city centre, but even closer are the neighborhoods of Sablon and Marolles, which have many shops and restaurants. Also, just down the street is the free elevator which can take you up to the higher level of the city. There are great views: you can even see the Atomium. From the park at the top of the elevator it's a short walk to Boulevard de Waterloo, which has the (expensive) shops of the world's exclusive brands.
Just across the road, there is a cafe/bar where I had a good meal. It is next to the church which is mentioned in some other reviews. Yes, the bells are loud! But they don't ring at night, so I didn't find them an inconvenience.