Location: The place is super easy to reach from the Nakai station, which is easy to get to from Shinjuku station.
Noise: some of the other guests were noisy at night (11:30), but that’s hard to avoid in a small space. Neighborhood was quiet, though.
Sleep: bed was the largest I’ve seen at a hostel with taller ceiling, too (I got top bunk). Very comfy, too. The curtain was not quite long enough though, so some light got in. I recommend and eye mask or something if light bothers you.
Overall, I would stay here again for location, bed, and price.