The Greystone house and property were fantastic for a mid-size family reunion we held in July! There was plenty of room for 10 adults and 15 kids - we rented the additional hideout section under the garage too. The kitchen worked well for preparing large meals and there were plenty of places to sit and eat. The house was clean and well appointed. Every bit as nice as advertised.
The younger kids loved the bunkroom, while the adults genuinely appreciated the large spacious bedrooms and nice bathrooms.
All of us enjoyed the home and the beautiful property. Good hiking and biking is available without driving elsewhere, and we had plenty of space for kids exploring, building forts, shooting BB guns, etc.
Other reviews have commented about the rough road to access this house. That is accurate, and we saw the good and the bad of that. The kids (and some of us adults) found it really interesting to drive through a working gold mine and watch the heavy equipment operating there. Once you got a couple hundred yards past the mine, the view and surroundings made it easy to forget it was there. However, the road past the mine was extremely rough. We suffered one flat tire during our 5-day stay.
I would ABSOLUTLEY stay here again, and would not be deterred by the road access. However, I would think carefully about what kind of vehicle I was traveling in.