Do NOT BOOK HERE.
I booked here for 3 nights and I DID NOT STAY A SINGLE NIGHT.
Firstly its quite the walk. Secondly, having to walk up that many staircases without an Elevator and a heavy suitcase is a nightmare. I at least thought things would get better at this stage.
Once I get in, I see a bug in the room. Not the most welcoming sight. I quickly start checking for other issues and i notice that the bed has pee stains in it (the bed was folded to hide it). This coupled with other issues led me to get out of there as fast as I could. Within 30 minutes I left, found a last minute hotel at a crazy high price and took it. It would beat staying here.
Oh also within those 30 minutes you can constantly hear noises (including the ambulance from the hospital nearby) with all windows closed. I dont think i would have been able to sleep a night here with all the noise (let alone the other issues I saw).
I notified the host about my problems and left and i was hoping they'd at least give me a refund but they have gone radio silent.
Japan is generally a very clean place and most accommodations I have stayed at are stellar. Just not Naoki & Kauki's place.