We loved staying in Hiroyuki's place and hope to return another time. It was a wonderfully atmospheric place with an astonishing amount of space . The neighbourhood of Yanaka is a great place to be in Tokyo particularly if you are wanting a quieter pace with a mix of traditional and contemporary independent shops. There are also interesting shrines and temples. We stayed for 4 nights and the area has good restaurants, and local bars.
Hiroyuki provided great directions for our arrival and also a list of a few of the local attractions. He dropped by as we arrived to make us feel welcome.
We were collecting a range of items for our business and it was extremely helpful to be able to have the extra space for packing and we appreciated very much being able to store our luggage for a while.
Being above the bath house gave an interesting ambiance. I think the place is particularly suited for couples.