Carine's place is charming and for me it was perfectly located near the EU institutions which brought me to Brussels. I love the fact that it's in a residential (i.e. non-touristy) neighborhood where walking the streets you are amongs locals and not tourists or businessmen in dark suits :-)
The garden looks lovely, sadly I was there in January so didn't get to use it but it must be super for warmer months.
Note that the bathroom is downstairs so if guests have problems going down the tight spiral staircase (e.g. elderly people) they should keep that in mind.
Carine was kind to leave some nice stuff in the kitchen on my arrival including a few Belgian beers :-) :-)
The fireplace (not in working mode) and huge mirror above are fantastic and lend special charm to the apartment - you won't find *that* in a hotel room!