Anantara Resort opened on The World Islands (it's not part of the Heart of Europe) in December 2021.
I have seen nothing of this resort up to now and they seem to still be hosting PR trips 6 months after opening which isn't promising!
In December, the artificial archipelago got its first hotel: A five-star resort operated by Anantara that sits on the island representing Argentina and offers 70 beachfront villas with panoramic views of Dubai’s skyscraper-strewn skyline.
From a jetty on the Palm Jumeirah, a 15-minute transfer via speedboat provides views of Dubai landmarks such as the self-styled “seven-star” Burj Al Arab hotel. As the boat enters through the World’s oval breakwater, the Anantara resort comes into view, its circumference marked out by a thousand coconut trees imported from Oman. Staff clap arriving guests in a ceremony aping traditions in the Maldives. Peacocks root among young plants dotted around the beachfront.
For the most part, the operation is already well-oiled. Staff are attentive but give guests some privacy, communicating via WhatsApp rather than intrusive phone calls. A Mediterranean-themed restaurant provides a buffet breakfast and all-day eating. Qamar, the fine-dining outlet, boasts a porch overlooking the sea, where they serve Arabic and Indian food, including some of the finest naan in Dubai.
It takes a gentle 30-minute walk to circumnavigate the island and, while most of the World remains unbuilt on, a handful of other developments are visible. There are the lush surroundings of “Greenland”, where Sheikh Mohammed has a villa, and apartment blocks and Viking longship-themed palaces on “The Heart of Europe”, a residential and hospitality complex over six islands.
Source: https://cnaluxury.channelnewsasia.com/experiences/dubai-world-islands-anantara-resort-maldives-200761 & https://www.anantara.com/en/press-releases/anantara-announces-upcoming-launch-of-new-resort-on-dubais-world-islands