The entrance of the hotel is basically a garage.
The staff is super unfriendly with foreigners.
There's no support other than a phone which you have to use in Japanese. They gave me my room key without even telling me I had to pay a tax in a machine, so when I tried to go to my room I couldn't because it was not activated. Only then I was told about the tax, and they wouldn't support in any way.
It's next to the railways, so in the middle of the night the cargo train passes waking you up.
Avoid at all costs. This was not a cheap stay so very dissapointed in this hotel.