The Park Hyatt beach and area around it is beautiful I believe. I spent a month in Phu Quoc last year looking at business opportunities. I looked at doing business at a beach that I was told would most likely become a Park Hyatt. I actually wanted to do something in that spot as it was really beautfiul and far away from the mass developments sprouting up everywhere.
If it is the beach I visited, it is an absolutely beautiful beach area. I look forward to staying there... though the JW is gorgeous (though service subpar).