Norimasa san house is really a good place to stay. The location is nearby train station and lot of restaurant and shops are located within walking distance.
Norimasa san and his wife are responsible and friendly host. They will give you suggestion and idea for the direction nearby their house. Moreover they can speak very fluent Mandarin so communication is not a problem at all.
We will definitely stay in Norimasa house again if we visit Tokyo again as this is a really strategic place in Tokyo.