In the spirit of sharing information, I think you would be doing a good service for your fellow FTers by advising at which hotel your situation occured. Like you, I'd like to have fair warning if I pop up at a hotel late at night, only to find that there was some miscommunication between Hyatt reservations/GPP and the hotel. Since Hyatt Corp isn't disclosing these "secret" resorts, who else will?
You mentioned that the hotel gave otherwise good service and that the GM provided good compensation for your difficulties, so I don't think you'll be "hurting" them by doing so. I, for one, had some difficulties with the HR Macau last year -- they were great at resolving the issues and now I sing their praises.