We had a great 2 night stay with my wife and 5 year old son. We had very light luggages and have been living Tokyo in the past, so it wasn't hard to find the little house and the narrow pathway with the stairs leading to the house wasn't a problem at all.
The house was very clean and the value is great of the location. The upstairs room is pretty nice to just relax. We used this house just to sleep basically and spent all day outside.
Communication was very smooth. I had forgotten my iPhone charger in the house after check out and realised only later. We agreed that I could pick up the charger in the mail box and that the staff would ping me when they would have put it in, which they did.
I'd recommend the place without hesitation.