Yoshi has a very nice Airbnb and Hostel environment going on here, Music and Bar in the afternoons and evenings! Easy access to food, bars and shopping on the street outside. 2 separate transit options to the North and South. His bar food is nice and the drinks are regular bar prices.
The beds are nice with much more room on the bottom bunks. The top one I had shook slightly every now and then form either city, bunk mate or large vehicle. but not enough to be trouble some. As with any hostel sometimes you may find a snoring room mate. If you like hostel stays I'd recommend Yoshi's Top Edge anytime you are in the Koenji Area.
Not a great place if you like to prepare food but it is possible with effort in the small kitchenettes on each floor. With so many interesting places near by you can fill every night with an adventure though. 4 stops to the east by train gets you to Shinjuku and the rest of Tokyo. It is so easy to explore the Northwest of the greater Tokyo area.