Love Noosa, In fact lots of areas in Oz would be fantastic.
I quite like living on a small island most of the year - Isle of Man, and it’s very quiet, with beautiful scenery - around 80% of the size of Singapore, but only 84,000 people - so much easier to isolate. I was until recently splitting my time between here and Oz, mostly NSW and visiting friends in Queensland.
As far as the Caribbean goes, I love St Lucia, and Antigua.