Risa's house is a great place to stay. It is very nice house, modern style and the cleanness is also great. (I'm kind of person who really care about cleanness). The host family is really friendly and hospitality. It seems like we were staying in our family. The location is also great, few minutes to Kokuryo station and one train directly to Shinjuku, 1 time change to Shibuya station. And the big supermarket as well as 100 yen shop are next to station. We can buy everything there.
I highly recommend this place for your stay.