Originally Posted by
RichardInSF
Akasaka area: No luxury hotels. Closest luxury hotel would be the Ritz-Carlton in Tokyo Midtown, Roppongi, which has gotten mixed reviews on this site.
The Ritz-Carlton is definitely a luxury hotel; I don't really think there's any question about this.
The reviews about the RC Tokyo are no more 'mixed' than the MO NYC to my eye.
Personally, I think the Grand Hyatt just straddles the boundary between luxury and merely very upscale as well; although it's ruled out by the OP's criteria.
Based on those criteria, I would say that the RC Tokyo is probably an excellent choice.