Keita was a very nice host!
The home is indeed on top of a hill, so be prepared to do some walking if you're not relying on transportation. The trip downhill is pleasant, but the walk back up might cause you to break a little sweat and test your stamina, especially after a long day. Keita does offer free rides to and from his place when checking in and out, and a minimal fee outside of these occasions, although I never used the service aside from checking out.
The town is fairly quiet, although there is a zoo and some temples nearby. The home is about a 15 minute walk to the nearest train station, which is right next to a super market. Once you're at the station, it's about 40 minute trip to central Tokyo, and fares are fairly inexpensive. This was perfect for me as I wanted to experience Japan outside central Tokyo and because I was still working remotely, so it was a perfect place to stay for the week.
The view from the room is very nice, and Keita provides the basics for the room: a futon, pillow, blanket, and a towel for showering. There are electrical outlets that worked for all of my electronics (U.S. chargers), and the room also has an AC/heater that you're free to use, and I often used the heater as it was cold during my winter visit. The refrigerator and washing machine are also free to use, which was great.
Overall, it was a great stay and deal. Thanks, Keita!