The mud baths in Lo Pagan (approx 20min walk   , 900meters from apartment  ) 
You can walk down to the windmill (see directions under WALKING)   and the baths are on the left of the walkway out into the lagoon.

Walk out on the wooden walkways  and use one of the plastic containers to scoop up mud and apply appropriately.
Then go for a short walk whilst the mud dries
Once fully dry   go back into the mud baths to wash off the mud. 

Its important not to go into the clear water on the right, it should be washed off within the mud bath area

See some of the 5 star  reviews from TRIP ADVISOR 

More info from HERE