Super clean inside and out, exactly like the pictures show. It might even be better than the pictures! There are some rental scooters parked right outside, as well as a package locker (I did not use either, but I could see them potentially being useful to travelers). Absolutely no complaints. Koichi (the host) was responsive and helpful.
The only things I'd keep in mind for potential guests are that there is no elevator, so be mindful of that if you're picking an upstairs room and not packing light (we had four rolling cases between us, so it was very fun carrying all of that up and then down the stairs). The other thing is that the closest stations are Tokyo Metro, so if you're planning to use a JR Pass, it won't work; this wasn't a problem for me since I was using a transit card, but keep that in mind as it may complicate your transit plans.