The rate indicated on your confirmation is in the official hotel currency and will be charged at that rate on check out. (bali.anantara.com)
These returns are based on the valuations above so it's possible that you could have different return levels based on your valuations of the different hotel currencies. (uponarriving.com)
SPG points are the most valuable hotel currency worth about 2.4 cents per point. (uponarriving.com)