The place is as-described, but honestly undersold. I think it's probably closer to 700 sq ft (65 sq m), though I would ask the host. The point is it seemed like a very large studio with two full beds, a back area for hanging out, a booth for dining or using a laptop, and a desk for the same.
It had plenty of outlets, a washer (drying worked with the shower dryer), lots of little nice touches like a hairdryer and the likes, and ample cooking amenities. I was able to hit local grocery stores (5m walk or less) as well as convenience stores (7-11 the closest, but family mart was also near).
The location is great for those that want a night life in walking distance, but a quiet home. You can walk in 5m to Bar Ghetto, a well known local bar that's unique. Other bars and the likes are around, too. Train access works well with two stations (shimo, ikenoue) that lead to Shibuya and Shinjuku for fanning out. To give an example, Akihabara is across town. Take the Express Odakyu to Shinjuku, and the Chuo rapid to Ochanomizu Station, then a 10m walk; or take the Chuo-Sobo local direct to Akihabara. Figure, it's Shinjuku station, so you have access to a major hub. If you want to hit the night life in Shibuya or Shinjuku those are just 5m or so rides depending on which station and if you take the express or local at Shimo-kitazawa station. You have the Sunshine City mall (THE Pokemon megastore) just north in Ikebukuro. The point is you have 30-45m max sight-seeing all the way to Tsukiji outer market. It may be on the east edge of West Tokyo, but that's not a problem. You can also see lesser-known areas like Kichijoji and Koenji.
About the only thing I wish were there was a TV with HDMI inputs. I've mentioned it to the host and he's open. And most may not care.
I haven't done a lot of airbnb, but comparing to prices in the area, it was mid-point. My feeling is it was a pretty good value.
Keiko was also very responsive to questions about Japanese trash rules and pickups, since I stayed 17 days, as well as questions about the use of amenities in the house.
I have no reservations recommending this place.