François was kind, helpful and welcoming. He gave very quick responses when we needed to get in touch (e.g. when the Eurostar was delayed and we needed to change our check-in time). We really enjoyed our stay at his amazing studio. The place is really nice, very spacious, stylish and decorated with taste. The location is great too, just 15 minutes away from the centre by bus and 10 minutes walk from Flagey / ULB / Cimetière d'Ixelles.
The bed is very comfortable and we slept very well. However we suggest bringing sleeping masks as some of the windows did not have blinds. This meant that the room was never dark due to street lights at night and the daylight early in the morning.
There is a massive table where you can have your meals that you can either take away or have delivered (lots of Chinese and Vietnamese restaurants that offer both in Boondael / Cimetière d'Ixelles area - 10 minutes walk). The kitchen is also well equipped to cook basic stuff such as eggs or pasta, and comes with basic condiments (salt, pepper...), good utensils and a great toaster.
The bathroom is quite good and François provides lots of quality products (Le Petit Marseillais shower gel, Garnier Ultra Doux / Ultra Blends shampoo and conditioner, good body lotion / moisturiser, and even feminine intimate body wash!)
The only downsides were a slow internet connection and the fact that you can lock the door of the room but not take the key with you, in which case we suggest you do not take any valuables on your trip if you are a bit paranoid. That said, there is only François in the house, and the neighbourhood is quiet and quite posh. One of us actually lived in the area many years ago and never had any problem.
Overall a great experience and we will most likely come back.