My wife and I had an amazing stay at Takumi's place. It was super conveniently located near the Otsuka station, so we traveled all over the city easily. The local neighborhood had lots of great food and things to do as well. There's a street market kind of thing a few blocks north that was less touristy and had a lot of great food and shops.
What really struck us was all the extra amenities in the apartment. There was a record player with some awesome jazz records, lots of quirky little touches (barbies, old japanese posters, a fireplace unit, etc.), and even a pull-down projector screen with apple TV. We didn't expect half of this greatness, but it really made our time in the apartment memorable and fun. Waking up to Musiq Souldchild and Miles Davis records is now a part of my great Tokyo experience.
The guys responded quickly and thoroughly to our few questions and the check-in was a breeze. I will definitely recommend this place to friends in the future and would love to stay here on our next visit!