Staying at Antoine's studio near the Grand Place was one of the best decisions I could have had for a trip to Brussels. It was a two minutes walk to the most prestigious place in the Europe and you have everything just around the corner (metro, tram, bus and bikes). The apartment is clean, with good furniture and great for a solo traveller or a couple. The internet is ok/good, but it can be better - however, if you are visiting Brussels, it shouldn't be your number one priority. I recommend Antoine's studio and I would certainly be back for a second trip to Brussels.