The US Virgin Islands (USVI) should be number 1 for anyone in the US that’s looking for a tropical destination that presents the fewest challenges.
Unlike international air travelers coming into the US, you are not required to present a negative COVID-19 test result taken within 3 days before your trip or documentation of recovery from COVID-19 before you board a flight to the US. Because the USVI is an American territory and on US soil, the new CDC requirement does not apply for travel directly between the USVI and the US mainland.