You are in your 20s, so what I would do is skip Park Hyatt Tokyo and stay 3 nights at the fabulous Andaz Tokyo and then jet off to Amanpulo. You can equally use your points at the Andaz and it is all the rage. Really. Pulo is bliss and you will not leave disappointed. It is definitely better than El Nido (Pulo's Mart T was at El Nido for a while and came back, don't know if you met him there).

Amanjiwo is just as good (and magical), but different. Amanwana is great if you're an avid diver, but not much to do otherwise. Jean-Michel Gathy comes back every now and then to dive, it has some solid spots.