Great location and value. Really easy to get to from Okubo or Shin Okubo station. I also walked to Shinjuku in 20-25 minutes from here.
If anything I thought the place wasn't as clean as it could be. It's nothing atrocious, but the shower had some black stains that I think is just residue that hasn't been cleaned for quite a while. I'm not really sure why it hasn't been cleaned, but hopefully it will be cleaned in the future. The bedsheets and towels were of course clean and I had no issues with those!
The place has great value and the size is very good for a Shinjuku rental. I would recommend this place.