Had the pleasure of staying here for 1 month, the accomodation was spacious particularly by Tokyo standards. It was clean and comfortable and reasonably furnished. As mentioned by the host, it is a traditional house so the walls are thin and in winter it gets very cold. However there is reverse cycle air conditioning in each room plus a gas heater in the living room so it was suitably warm.
There is also a comparatively large kitchen too however with all the wonderful cafes, restaurants and bakeries close by, probably don't need to use it.