Great location in Sunriver! We enjoyed our 3 nights as home base for the SHARC and a day trip to Crater Lake. We utilized the whole home for 2 families / 11 guests. It was a bit of a puzzle to accommodate all of us comfortably. Two adults tried to sleep on the downstairs 'queen,' which seemed to be a double (adult male's feet stuck out from the end of the bed). Being a metal spring mattress, it was pretty loud and uncomfortable. The upstairs queen ended up working out better (easy swap with kids). Just wanted to give a heads up for any future adults that might plan to divvy up the rooms that way.
The sofa sleeper in the loft didn't have linens. We grabbed the trifold sleeping pad from the MBR closet to put on top of it to make it a bit more comfortable, and found some extra blankets in closets to create a bed. An extra pair of sheets would have been helpful, or a stack of designated linens.
We could only find 8 white bath towels in the house, in addition to a stack of striped pool towels (which were helpful to have for the hot tub and SHARC). With 11 guests, that seemed a bit low on towel count for 3 nights.
The bathrooms are a little dated, although clean! It was helpful to have 3 full bathrooms with drawer/cabinet space. Be careful with kids slipping if they aren't standing on the grip strips in the shower.
The kitchen felt kind of tight, but everything worked well! Limited counter and food storage space, so we used the empty closet a few steps away.