We had a good stay at Louis's place - it is indeed spacious and quite a departure from your garden-variety apartment. The rooms are tall and there is a variety of illumination sources, some of them with adjustable power. The living-room windows also provide plenty of natural light during the day. The bedroom has 2 doors - one to the vestibule and one to the living-room.
We were greeted by a friend of Louis, Mr. Goetz, who was very kind and helpful, didn't mind that we arrived a bit later than established, and showed us where everything is in the apartment. He remained our contact person later-on (we never met Louis in person) and was quick to answer to our questions. Plates with appetizing snacks were waiting for us in the fridge, on Louis's behalf.
One thing you might want to remember: the main light in the bathroom is sensor-activated, so if you intend to have a shower it's best to also turn on the small light above the sink, or you risk to find yourself all soapy in the dark.