The room: the room is beautiful and comfortable. Pros: you have a private bathroom (which is super nice). Cons: doors and windows are of old design, so some don't close properly. When the heaters are working, you will be good enough. When they stop, it gets a bit chilly (in the wintertime, at least).
The place: the living room is huge and practical. The wifi works well in both the living room and the common areas.
Regarding the kitchen, ask before going if you will have full access to it, as I had some misunderstandings, especially if the other room is also rented.
The location: it is one of the best characteristics of the house, all the more if you want to visit the EU Institutions. You have a supermarket and metro/bus station nearby.
The host: Richard is a great person, willing to help and talk at all times. Eliza (she cleans the house and works as Richard's representative at times) is very cheerful and helpful, but be aware that she speaks French or Portuguese.