Qiong's accommodation is not as clean as a hotel. But the moment you're there, if you're not a claustrophobic, it'll feel like your familiar home. All amenities are in place and you can find everything you need during your stay. I haven't felt any discomfort in seven days.
When you get off at Oshage Station, you'll find Life right in front of you. You can buy the things you need there. There is a family mart near my house and there is another supermarket near my house called Discount Mart. I usually bought there.
I don't want to describe it as a downside. Just to tell you about the location, if you're looking around for tourist purposes, including Shinjuku, it's certainly not an advantage. It's about half an hour by subway, but it may seem far away. However, considering the narrow and extremely expensive accommodation around the entertainment district, this place could be an appropriate alternative.
It's really quiet around the residential area. There's nothing to worry about security or anything like this. If you want to enjoy a short life in Tokyo, I recommend this accommodation.