Margaux's apt is lovely furnished, very clean and spacious. The bed is quite comfortable (soft mattress) and overall it's perfect for 1-2 people. It's about a 1/2 h walk to the city centre and main attractions, but perfectly located if you arrive by train at Brussels-North railway station (only 10-15 min walk). There's a small supermarket in the same building, which is very convenient.
Margaux is very nice, helpful and quick to response. However, correspondence was a bit difficult sometimes because all instructions are given in dutch only (makes you dependent on Google translator). It should be noted that at the moment (August 2022) there's a huge construction site next to the building which makes it noisy during the day (it's ok, when the windows are closed). Also the apartment gets really hot during the day.
But overall it was a lovely stay and good starting point for the day.