Yadoya is OK for a group looking to experience what it’s like to stay in a tiny Japanese style house.
A few challenges for tall people with some low doorways / stairs.
Getting out of the building a bit annoying. Very easy for the uninitiated to trip the alarm and it will ring for 3 minutes before it resets.
Smart Washing machine but only a few English labels so a bit of trial and error to get it to work.
Note you cannot leave luggage after you check out at 10am so if you have a late flight you have to find some lockers. Locker that will fit a large suitcase cost about 600-700 yen at major railway stations.
All up it would probably work out about the same cost to get a hotel room closer to a station and you’d have fewer challenges.
Lastly a note for AirBnB. The check-in/ guest registration requirements are over the top. An overseas visitor with a Japanese passport would NOT need to do all the registration stuff at a hotel. Maybe I should have chosen domestic visitor instead.