Completely satisfied. The room was exactly as described, the instructions provided by the host were clear, the mattress was very comfortable, the WiFi worked adequately and so did the washing machine in the building. It was ideal for my stay of about 2 weeks, a short walk from Yotsuya Sanchome Station, and another station within walking distance.
I never saw the host in person, but he always replied very quickly to my messages in English, and he was very available when I asked him (twice) to extend my stay.
If a friend wants to visit Tokyo for a few days, I will recommend this accomodation.