Haile’s place is a great place to stay in Brussels even though we were only there for one night. It is a short walk to much of the city’s sights; is very stylish. If you get there before check-in time, ask the host about storing your luggage early.
The only downsides as other people have noted is the noise from the surrounding area. We were there on a weekend night and the restaurants on the side and the parking lot behind the apartment are quite loud at night. The window does keep the noise out well but in the summer, there is no other source of ventilation so you have to choose between being hot or having noise. I think a room fan would be a nice touch.