I'm almost tempted to lie and say we had a bad time so that other people won't book this up.
My partner and I came for a week of teaching at a school in Watermael-Boitsfort and this place was completely perfect. The kitchen delightful and well stocked with tools for lots of home-cooking (if very compact!), the space stylishly and functionally decorated, and close to public transit with easy access to downtown Brussels. The hosts always responded to our messages immediately and the check-in process was seamless.
Bonus: it's on the main floor so you don't even have to lug your suitcases upstairs! ✌️