It's a really small room, maybe 4 or 5 sq meters. There's a twin bed, and that's really it--no chair or desk (and no room for it). They let me use the desk in their daughter's room as a favor (don't expect full access to the house). It's ok if you're just looking for a place to stay to break up a drive, but there are other options which are less cramped and offer better value.
Also please note their commentary that check-in is only after 6pm (and there isn't a keycode to access it without them there).