Good location, located one metro stop away from Shinjuku. Check in and out was pretty straightforward and simple. The only issue I had was with the wifi. It didn't work on 3 of my devices after I had connected to the internet. It was late so I didn't want to make a big deal out of it, but it made me go outside and search for a signal.
Other than that, it was a rather cozy place. Don't forget you need to turn on the water boiler for hot water. Also, try to sleep with the heater/air conditioning off because it does tend to be quite loud. If you're looking for an affordable quick night stay in Shinjuku, this would be the place to go to.