We had a group trip organized for 17 friends, and this house was amazzzzing!!!
Plenty of different sleep opportunities for different group dynamics (bunks, queen beds, shared rooms), plenty of space around the table for shared meals, great kitchen for cooking breakfast, and plenty of hang-out spots for everyone to wind down together in the evenings!
The facilities were great - a very friendly snowplow and driver arrived one morning as we were digging our cars out, which meant our day started without a hitch! Additionally, the hosts were super responsive, answering my questions about trash and maintenance incredibly quickly.
The only /very minor/ downsides were -
The house was about a 40 minute drive from Mt Bachelor. We knew about that going into it, so we had carpool plans for days up on the mountain - very manageable. Additionally, when all 17 of us got home at the same time and showered, the hot water struggled to get us all through. I would recommend giving more time in between each shower to allow the hot water system time to catch up.
Overall, we'd rank this accommodation a hundred out of ten, we'd love to check out more Avant properties!!!!