Didn't end up staying at Naxian, but did have mostly positive experiences at both Canaves Oia Epitome (Santorini) and Summer Senses Luxury (Paros) last week. Canaves was points redemption (3 nights) + 1 paid night (SLH, not Hyatt). Awesome property (even though unfortunately didnt get an upgrade). Summer Senses I actually used Citi Prestige 4th night free benefit for the first time in years, the cash savings were well in excess of the Hyatt point value.

I've loved the partnership for redemptions but on cash stays the premium for booking through Hyatt is often well more than the value of the points (and most SLH offer free breakfast in base rates so minimal value to globalist benefits). Always worth doing the math though.