We stayed here two nights. The Chateau has 3 rooms; 2 with lake view, one without. What really makes this place special is the amazing view. Our room (with a lake view) was also peaceful and quiet. Main issue was that heat didn't work. Owner did come (it was 11pm) and tried to fix it but couldn't. He brought a portable heater (kind of noisy). I can't blame him for the problem I guess - He was responsive and did try to fix it - but first night was not 100% good because of it. The room was spacious, high ceiling. Cleanliness was ok - lots of dust under the bed and some cobwebs.
The property has only 3 rooms, so maybe no one cleans it during the week. The restaurant in the property (Manhattan prices) does have amazing food. We roasted Marshmallows in the private years at night.
So over a very nice experience, I would go again - but only for a room with a view; that's what makes this place special