Located towards the eastern end on the nothern shore is an area called Repúblika Paya! Its what they nicknamed their resort area (22 acres) of palms beaches and calmness..
It also is where you can get based to do some kitesurfing from or visit pigeon cay just off the south shore of Barbaretta the islet east of Roatan.
You get a quick sense that Yoga mantras and relaxation are what makes this place what it is. Its probably not openly called a retreat but it looks like it could be.