Gotcha. My choices, without blowing lots of cash, are limited to IHG and Hilton properties. I'm thinking about using HH points for the Conrad Tokyo and PC points for locations outside Tokyo, then.

The Narita HI seems like an option, but would it be decent, or would I just be better shooting more points on one final night at the Conrad?

Also, I'm not averse to using the Any Hotel, Anywhere card for traditional/unique short stays at hotels that take American Express. How common is that in Japan, or are most places cash-only?