Do not travel there alone as a woman. I have travelled all over Japan for years, and this is the first hotel where I felt unsafe. It felt very shady, and you can only pay cash. The area around is dirty and there are many old and drunk men around, even on a Tuesday.
The hotel itself is run down and dirty. I was afraid of catching something disgusting in the shower - like fungus or warts.
I had also made a reservation for a non-smoking room, but it stank of tobacco. Their solution? Have an air freshener in the room, which didn't help. They found another room for me thankfully, as I absolutely hate the smell of cold tobacco. Thank god I only stayed for the one night. You can hear everything between the walls, and there are police and/or ambulance driving by all the time.
It boasts of having an onsen, but it's for men only.
On the plus side, wifi was stable