We are arriving same date and staying French side; I do not believe a COVID test is required to stay on the French side at that time in smaller (<=30 people) accommodations. This is based on recent info from our hotel and info at this link:
COVID-19 / IMPLEMENTATION OF THE MEDICAL PASS IN SAINT-MARTIN
(which has been posted on the forum before - thank you to whoever did that)
Definitely do as others have said and check with your hotel though.
Dave
(first post here, thank you to all the people who have taken the time to post useful info here recently!).