Pulau Samalona is the quick island escape from Makassar, close enough for a day trip but far enough to swap traffic for pale sand and clear water. The island is small and simple, with beach time, swimming, and snorkeling as the main reasons to go.
Do not expect a remote castaway experience; this is a popular local outing and facilities are basic. Arrange a boat carefully, agree the return time, and bring what you need for sun and water, then treat the trip as a relaxed contrast to Fort Rotterdam, Losari, and Makassar's busy streets.