I stayed for five nights at Kyoko-san's appartment and absolutely loved it! It has a convenient access to Shibuya station, and is located in a very quiet neighbourhood, with several groceries stores located near by.
Kyoko-san was very arranging for the arrival, and the room was very clean and confortable!
Kyoko-san answers also very fast to questions! She even offers delicious japanese breakfasts everyday!
I would really recommend her place!