We were a group of 5 staying at this place and linen was only provided for 4. Aki was quick to assist with providing additional bedding but it still wasn't the best.
The sofa bed is not a sofa bed. It's only a couch that even my 5 foot 4 friend couldn't sleep on so Aki helped us find another futon to sleep on.
The futons were too thin to sleep on and incredibly uncomfortable. It was almost like sleeping directly on the floor.
The walls are very thin so we could here people next door running until 2:00AM in the morning. That coupled with the occasional dog barking made sleeping difficult.
While the place advertises accommodation for 8, there certainly doesn't seem to be enough space for 8. We were 5 and there was plenty of room for us an luggage.
Towels in Japan are smaller than we're used to back home in Australia but the towels provided here were tiny. I'm not exaggerating when I say they're just longer hand towels.
All in all if the bedding situation is fixed and better towels are provided then this Airbnb is an easy 5 stars.