I once went to a private resort in Thailand that was only accessible by boat. We also had "personal service", but the atmosphere was completely different - no fuss, no rush. The main feature there was dinner on the beach, when they put a table right by the water, and all the dishes are prepared from local products. For those who are looking for real exoticism, I can recommend looking at the selection on the website:
https://findbestbeach.com/. This is not only about luxury, but also about unique places where you can really feel cut off from civilization. Such a vacation is much more interesting than just expensive hotels with a pool, in my opinion.