We stayed here with six people, so it was a little bit too small. But we knew that before and Hiromasa-san told us beforehand.
The apartment is near a train station and a lot of convenience stores and even a post office and a coin laundry. The place itself was clean as it can be. The two bedrooms have separate air condition ers and the shower is quite big. Our host prepared towels, toothbrushes and soap/shampoo for all guests.
The check-in and check-out went very smoothly and our messages beforehand got answered very quickly and friendly.
I can't say anything negative about our stay and we would be happy to stay there again.