We had a 5 nights stay at Shu's house and everything was definitely great!
The room is bigger than expected with a private living room and all kind of comfort and amenities.
The shower is comfortable at the bottom of a private kitchen, the WC is on the front door.
Shu is very reserved person, friendly and helpful, we had a chance to talk together only one time but had a nice feeling.
Complementary bottle of water and cans of soda were available in the fridge and a few boxes of cookie and chocolate bar upon the living room table.
Wash machine for free usage as well as to borrow a couple of umbrellas from the closet.
The room was very clean and the place is close to the main stations around Shinjuku area.
I can only say HIGLY RECCOMENDED!!! Thanks Shu!