This is the best place in Brussels.
Other places in the center also looks fine but many people said those places are noisy until midnight.
This place is still center AND silent. It also has nice balcony which you can look over the city. The building is really new.
A super-marcket "Carrefour" is less than 5 min. walk and a bakery "Poul" is also nearby.
I really recommend you to stay this place when you visit Brussels.