Kota's place is a charming, creaking old wooden house in a real Tokyo neighborhood. This was a cool place to stay.
Most people who visit Tokyo will stay in a shiny, modern, soul-less hotel or apartment. My wife, who is Japanese, described Kota's place as the kind of old wooden home her grandparents lived in. This is a great step back into time. Tatami mats on the floors, futons, paper screen doors, quirky old wiring, and lots of places to bump your head on if you're not careful.
Kota was a nice host. Good communication before the visit, good orientation to the house and neighborhood, and everything was very clean (given the age of the house).
Although it's on the Yamanote line, this is a surprisingly quiet, low rise neighborhood wedged between the craziness of Tokyo. Real people live here, and it's fun to find your way to the tiny alley entrance to the house, about a 2 minute walk from the Uguisudani train station.
Tip: Go to the Gouter Le Ble bakery, about a 7 minute walk. It's the best I've been to in many years of visiting Japan.