I know sydney wasnt happy after their reno when I was using a lot of hsinn1 at the hotel. But funny enough of one of the stays they gave me the harbour roof top suite which was niiiiiice.
i only used the hsinn1 cert's at the PHT and the GHT in August so I must have been one of the lucky last. I'm not sure if the grand Hyatt is still on the list but after staying at 5 different hotels in Japan only a few months ago I would pick the grand Hyatt no questions.
For a HGP BRG try using innstant.com , otels.com or aa.com
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