Yuka's house was amazing!
Firstly the home is one story, so people that have difficulty going up and down stairs will have no issue. Secondly, there are TWO bathrooms, with all the standard japanese gadgets.
And Thirdly Location, there are many great restaurants nearby, local grocery stores, combinis, and its a 5 min train ride to shinjuku. The walk to the nearest station could come down to 3 mins through a shortcut, but this is not recommended with luggage.
Finally Yuka has been amazingly helpful. Very quick response time, easy to understand instructions, and great local recommendations.
10/10 would stay again.