I didn't meet Simon, but I did meet Amir, who was very communicative and responded very quickly. The apartment is in a great location - close to everything (walking distance), and if you're arriving by car, there are also plenty of public parking lots within 10 min walking. The place was clean and comfortable; there were three of us, and I slept on the couch, which was super comfortable and of course came with sheets. There was no hand soap in the bathroom, but we popped by the store and got some. Wifi worked perfectly. Overall, a really great place, and would stay again if I were in Brussels.