We enjoyed our stay and found the apartment comfortable and as pictured.
The apartment is well-located (most of Brussels centre is within a 30-minute walk) however, it is on a busy road. There's also a popular and noisy bar almost outside the apartment that stays open until 1am/2am every night but Sunday.
The bed is supremely comfortable, but the apartment makes lots of strange creaking and popping noises! There's no separation between the upstairs and downstairs, so you lie in bed at night listening to the fridge.