Kota is such a nice guy, he waited for us till late that day, and came to pick us up when we could not find the way. This place is quite close to the JR山手线， which connects a lot of tourist attractions in Tokyo.
The house has a long history, but everything in it is not as old as I expected, all the facilities are quite new. It also has Apple TV for us to use. And in the 2nd floor, there's a large room to sleep on the tatami.
Kota has provided a lot of useful maps for Tokyo. Also he has a large map for places around this house and marked restaurants, cafes and etc. to recommend and translated into English.
Great location and awesome house if you wanna experience the traditional Japanese people's life. (Heard from Kota that sometimes he spent holiday here with family)