I stayed with Chie for several nights and I absolutely loved it! I felt comfortable and very welcome, her hospitality definitely added to my overall Tokyo experience. She was always available for questions and advise, if not in person, then via chat/ online. She showed me around her neighborhood, which is a quiet residential one) and we had good talks. Situated between 2 Train stations (Metro and JR), it is perfectly located as a base to explore Tokyo.
For the notorious over-packers: be aware that you will have to carry your luggage up a narrow, steep flight of stairs. As so often in Japan. A great work-out!
The room itself was, like the apartment, equally comfortable and clean. The big bed easily sleeps 2 people, but it takes up most of the room. If both bring a big heavy suitcase (like I did), there might be an issue with space. Maybe it is good to talk to Chie beforehand about how to handle this?
Overall, I defined recommend Chie's place for your next Tokyo trip and would stay with her again, any time.