Min (the host) did his utmost to help me get to the location by sending me photos on whatsapp and being available around the clock to respond. The address was very well described and easy to reach.
Not the fanciest of the buildings, but the house is on the 6th or 9th floor thus offering some view on Shinjuku. You directly feel the warm welcome of Min when you step in and you connect with other fellow travelers. A cosy, clean place with shared living room and dining table and bathroom/showers. Whether you are traveling solo or with friends, this is a great option since you will be located in one the most buzzing areas of Tokyo. Need to know more, ping Min! :)