I had great stay at Chie's place!
She responded my questions so quick, and she was very friendly (I had chance to chat with her ;)
Her place was as described on her Airbnb site; very easy access to JR station (I used JR station since I had Japan Rail Pass). it's short ride to major Tokyo station.

I'd definitely stay at her place when I go to Tokyo next time. Thank you, Chie san!