We had a wonderful time in Brussels, and our stay could not have been nicer at Antoine's place!
The location can't be beat -- it is right off of the central square, which allows easy access to restaurants and sites of interest. This is a great area to leisurely stroll the streets, sit to have a drink, and people-watch.
When we arrived, Antoine had left the keys with Evey, who works at the neighboring hotel. Evey greeted us, walked with us up to the apartment and showed us all of the amenities. She was incredibly friendly and told us to let her know if we had any questions or needed anything.
The room is small, but as shown in the pictures. What the pictures don't do justice to is how well-appointed this space is. For instance, there is a small nook that allows bags to be placed out of the way, and the bathroom is extremely modern and luxe.
The room was very clean, and we found the bed to be very comfortable (great pillows, soft bedding, and really two beds pushed together so you have plenty of space). The towels were also very nice, and the shower pressure and temperature were easy to control to one's liking.
During our stay, it was very hot in Brussels (in the 90s Fahrenheit) and the room was equipped with a very nice high-powered standing fan. This in combination with having the windows open allowed us to sleep well at night and rest comfortably in the afternoon as needed for a siesta. I should also mention that even with the windows open, it was very quiet at night, and we never heard much noise from any other guests or from people on the streets.
One note for future guests -- there is a narrow, steep stairway to get to the apartment, and I don't think that it would be very easy to get large baggage up and down. If you have luggage that you were able to carry on to a plane, you should be fine!
This place is highly recommended -- very well-appointed and spectacular location!