We stayed 4 days in this house with 10 group of people. Its a typical house in Japan. 1st floor is the kitchen and living room (the house provide futon to sleep here), 2nd and 3rd are bedrooms with 4 beds on each room. It said double bed, and it really queen bed type. So will be fit with 2 person to sleep. Each floor has shower room which equipt with hot water, soap, shampoo and conditioner. Has a toilet separately in each floor too. So... you dont need lot of time for queueing to shower or go to toilet. For the location, it placed near Shin Mishikawa Station, we could go walk not more than 2 mins there. Travelling with train in Japan is recommended to do.
Taka san in a superhost, indeed.