Manon's place is an absolute gem.
I went for a work trip to Brussels, and needed a place in which I could work and relax. But this place was so much more: it made me feel at home. I could've stayed indefinitely.
The park opposite to the apartment is just breathtaking, your view is of tall ancient trees, green fields, and gorgeous skies. I doubt it's easy to find a place like hers.
Public transportation is very close, but I did a lot of walking.
Also plus: great mattress and nice little balcony.