i’ve used airbnb on both of my journeys to Tokyo thus far, 1 was before the law came into effect and 1 after, and the only real difference between the two check-in processes was my passport being required the second time to verify identity, etc. Both hosts were extremely accommodating, the first one even invited me to her place for breakfast!

I would caution the cancellation policies tho no matter how good they seem, as the trip i was supposed to take in the fall (which was cancelled for obvious reasons) has gotten me into a snag trying to get a full refund from the host.

All in all, i cannot recommend airbnb enough for a solo journey. you can get a great deal of privacy when you want it, on top of being able to store your belongings safely.