I stayed for 3 nights at Hisao and it was very pleasant.
The room is operational with western style single bed and a well equipped kitchen for cooking. Bathroom is also well equiped, and room has air conditionning. The room is in a fairly quiet zone, no trouble with neighbours. Hisao is a very sympatic person and although not fluent in English it was sufficent to understand each other. You are provided each morning with sweets and a sandwich made by Hisao's wife, which is a great attention. Moreover Hisao is flexible with schedule and kindly kepy my luggages after check-out, this is really precious when you have a bulky suitcase. The subway station Minowa is conveniently located at 15 min walking.
For the very low price of this offer the quality for price is very high and I will probably come again at Hisao's.
I warmly recommend this offer for Tokyo visitors.