Shinjuku Sharehouse was a great place to stay. The owner, Min, made it a very welcoming place, and took the effort to help me out when I fell sick. Facilities were very good, with a working hot shower and towels, and the location was just a little north of the night life districts of Shinjuku, which means that you can easily walk over to most of the attractions and yet have some peace and quiet at the end of the day. It's also very near Shin-Okubo JR Station and Higashi Shinjuku Station (Oedo Line), making it an ideal base for exploring the rest of Tokyo. Overall, thumbs up!