I really enjoyed my stay at Chie's, despite how far it looked on the map (which it really is not) it was easy and quick to get into central Tokyo. The area itself has a suburban feel and is quiet at night, which I loved. The wifi was strong in the house and the portable wifi seemed to last forever before needing a charge (at least for me). The stairs are steep, so larger suitcases may be a struggle to get to the bedroom and the mattress is on the firmer side. Also, Chie's place is also obviously her home so while it is clean don't expect 5 star hotel level cleanliness.
These weren't issues for me but it's best to keep in mind when booking.
I met Chie briefly when checking out and she was super friendly, something you can tell straight away when corresponding with you and with the check in notes