We ended up staying one month in this flat and it was great for a couple. It’s spacious, comfortable, quiet, has a wonderful terrasse to get some sun if you get lucky with the weather (we did) location wise it’s a great neighbourhood with lots of shops and restaurants to discover.
Communication was excellent.
The only small thing is that we ended up having some issues with chairs and door handles falling apart but nothing very serious. Overall we warmly recommend this place for a stay in Brussels.