I have to say the room is beyond my expectation when I arrived at place. It's more commodious and livable than I thought. And Kaoru is very thoughtful and kind to us. I arrived at Tokyo in the mid-night previous day and wanted to find a place to store my baggages next morning, so I can enjoy my journey next day freely. Kaoru allowed me to leave the baggages before my check-in time and showed a lot of detailed photos of the kichtem facilities when I have asked quesitons about how to cook in the room.
The location of the room is also perfect. It's about 10 mins walk to the Takadanobaba station, which is one of the JR Yamanote Line stations. Therefore, it's very convenient to get to the Shinjuku, Shibuya or Shinagawa from there. It's also near the Nishiwasada station of the Tokyo Metro Tozai Line. You just need one more interchange to get to Asakusa.
I like my stay here very much. If I would visit Tokyo in the future, I will choose his room again.