I stayed one night in this room. It's clean and big, and very confy. Very close from Shinjuku.
The only downside is that I had to wait for the host around 20mn with no way to contact (as a foreigner I didn't have a SIMcard to make a phone call and WiFi password was not indicated), even though I sent a message telling when I would arrive.
But it's still cheap and very well placed in Tokyo so I recommend