I stayed two nights at Dat's place and had a really enjoyable time. Check-in was smooth, with a lock for the key that would permit me to arrive on the early side. I didn't meet Dat personally, but he was very considerate and provided a number of recommendations on places to visit and eat during my stay.
The apartment is very centrally located, right next to Bourse and within very short walking distance to Grand Place. It's also right next to a metro stop, giving you great access to greater Brussels. In addition, there are a lot of nice bars and restaurants in the area. The apartment is very spacious and has good light. The bed is large and comfortable, as is the couch. There is a smaller second room that could easily sleep a second guest. A very comfortable apartment that would be good for a small family or group or for a solo traveller who wants to unwind. The only problem is that internet could be a bit slow at times, raising questions as to whether this would be the best place for someone who needs to do a bit of work at home during their visit. I would definitely recommend this place.