Yann's place is great - it's clean, cosy, and located in a great area (there's a supermarket and some local stores which are along the same road). Yann was really friendly and easy to communicate with, and was happy to let me store my bags in the apartment beyond the check-out time so I wouldn't have to worry about them during the day. I'll definitely come back if I'm in need of somewhere to stay in Brussels again.