My friends and I (there were 10 of us), we stayed in two two-bedroom appartments. The appartments were very spacious and clean. Each of them had two bathrooms, fully-equipped kitchen and a living-room with the dinning table, sofa/bed (we used it for our 5th person) and a large plazma TV. The rooms were full of light as there were a lot of windows all around the appartment.
The service was also very good. The reception guy helped us with directions, gave the map of Brussels.
The hotel has a big underground parking (25 EUR for car per day as far as I remember).
The only dissadvantages were that there was no free internet in the hotel and the breakfast was not included (but it's the usual thing for the residence hotel).
The location is excellent. The hotel is near the Luxembourg station and right in from of the European Parliament. It took us around 20 minutes to get to the city center on foot.
We really enjoyed staying in this hotel.
