The flat is in a nice neighbourhood, basically the heart of Brussels.
But when I move in an Airbnb flat for a 3 month stay you would expect everything to be working fine, but it was not (had to change light bulbs, buy things for the bathroom, etc.). The flat itself is nice but is in a need of renovation (dirty walls, some kind of soundproofing, since it is impossible to sleep when you hear everything what is happening in the street, etc.).
All in all I would reccomend Simons place more for a short stay, not for a long one.