The room is really small (smaller than 9 sq. meters) and even with the heating on the room was still coldish.
There's a big glass on top of the door and every time someone else in the house would turn the lights of the corridor on, it seemed like a light was on inside the room.
Also the walls are thin and you can hear people walking around the house, making it hard to have a good sleep.
The plus points were that the owners were nice and the room and the house was impeccably clean.
Still, if you're in a business trip and need a good night of sleep, this is probably not the place for you.