I had an average stay at Bakpak Tokyo Hostel. My husband and I stayed there for four nights during our visit to Tokyo in mid-September. We stayed in the double room with a private bathroom. In the pictures of the double room on Hotels.com, there is one picture of a room with a regular bed and then a picture with two Japanese futons. We were put in the room with the Japanese futons. My "mattress" was thin and I had difficultly sleeping. I eventually changed with my husband and his was newer and more plush. The bathroom is described as "partially open" on hotels.com and I was uncertain what that meant. Our double room did have a private bathroom, but the toilet was separated from the shower (both were found in our private room, though). When we finally figured out how to work the A/C, it worked well enough. However, the room managed to stay quite humid, despite blasting the A/C. The room also seemed quite dusty.
The surrounding area is almost entirely residential. I believe we only walked passed two restaurants on the 12 minute walk to Iriya metro station. We also walked a bit further to Uguisudani station (about 20 minute walk from Bakpak) to take the JR line to different areas of Tokyo more directly. Sensoji Temple is also about a 15 minute walk from Bakpak, and definitely worth seeing. The area by the temple has restaurants and great souvenir shopping.
This is a hostel, and it's not the newest or the cleanest, but for what we paid, it was worth it to travel Tokyo.