This house is very nice, clean, and quite. Yagi san was very hospitable, he prepared Japanese breakfast for us too. It was just beside a small water lane, in July there were not so many flowers, but I think during sakura season, it will be very beautiful. If you want to experience local Tokyo people's life, this can be a very good choice.
It was a bit far from sightseeing place such as Asakusa, because they were not in same district. And Google map did not work very well if you just search the way from this house to other places. Please try to search from Shibuya station to the other places in Tokyo, it will give you much more choices of full subway system.