The appartment is right in the centre of Brussels which is perfect for a short stay. You can walk everywhere and the place is suited for larger groups as well (we were 5 people).
The check-in/out procedure is hosted by BnBSitter which was a bit unpersonal and iffy (bugged me months in advance to confirm the check-in time, gave me a wrong number of the sitter, sitter was late for check-in and gave little information).
If you don't expect a very personal touch, I'd definitely recommend the place to stay!