My friends and I had a great stay with our kids for a ski weekend at Northstar. The Treehouse was beautifully equipped and updated, and located conveniently near a shuttle stop with only one or two other stops on the way to/from the Village (install the app and request the ride in the morning - picks up regularly until 6pm from the Village, after which you can request a ride from the app). There is a ski locker in which you can store your equipment right by the front door.
The beds were comfortable, with warm quality bedding, and the bathrooms and kitchens were well-equipped with everything we needed. There was plenty of cookware, cooking oil, coffee maker, a nice toaster oven, etc etc. The mountain themed decorations of pine cones and bears were really cute (our kids loved the stuffed bears).
Colette is an excellent host - super responsive, helpful, thoughtful, and accommodating. We highly recommend her and The Treehouse, and would happily stay here again!