Kaori was as close to being family for us as we have ever experienced. As well as providing lovely friendly breakfasts every morning with her and her son she also put on a fantastic birthday party complete with cake and belly dancer for Nigel's 50th birthday. We were there for 10 days and consider her a dear friend.
On a practical note Narimisu is a 10min 250yen train ride to Ikeburkero (sp?) train station which is part of the Tokyo metro system.
The accommodation is large by Japanese standards with a separate bedroom and dining area. Very quiet neighbourhood with an excellent supermarket about 6 mins walk away. We would highly recommend this as a place for visitors to stay. Meeting Kaori will always be a highlight of our travel experiences.