It is a great place for a long stay. I stayed in Keita’s place for 2 weeks, it’s a cozy little house and Keita San make sure everyone feels like home. If you want to immerse yourself in a Japanese home with a great host this is a place you can choose, Keita San speaks very good English. The view outside window is so nice, the only thing is to have such view it takes 10-15 minutes walk from the station, if you are taking a big suitcase with you, definitely ask Keita San to pick you up.
Overall, I have a great stay here :)