One of the upsides to Japan is the friendliness of staff and willingness to run in any direction for you to find what you want.
I have travelled many times from Canada to Vietnam, always via an East Asian airport. This transit stop sometimes is up to eight hours and so I try to find a transit room.
Once at Narita, after sleeping and showering, I had more than an hour left on my room rental. I decided to leave early and get something to eat.
Upon handing in my key and my receipt, the agent glanced at the clock and gave me a refund for one hour!
I doubt that would happen anywhere else in the world.