The apartment is almost exactly as you see it in the photos. It is really cute and provided us with a good base in Brussels. It was close/walking distance to everything you need ( Grand Place, Central train station, metro) and the St. Catherine neighborhood is really cute. Having a private washing machine was very important to us and this machine did not disappoint.
Noise: an honest assessment here, the noise level is average. The bedroom faces the street. This street is on the smaller side so there wasn't too much traffic noise. However, there was noise coming from a nearby bar which might be problematic for some. On Saturday night the bar stayed open quite late.
Overall we enjoyed our stay and this apartment. Be sure to check out the places that the hosts recommend!