Before we arrived, Xavier notified us that he would not be able to meet us for check in, but gave very easy to follow directions to get the key. The space is very simple, and this for us is nice because we have a three year old. He was able to play freely and I did not worry about possible broken nicknacks.
The location is a dream. Within walking distance to a large park, delicious ice cream and a grocery store. Also within 15 minutes of the center of Brussels.
We never met Xavier on our trip, but he replied quickly with any questions that we had.