source Makassar is the main city of Sulawesi Island. This is the 3rd biggest city after Jakarta and Surabaya and is a major airport. There are flight connections to Singapore and also to all major destinations in Indonesia.
http://fophs.org/president-messsage/ Most people use Makassar as a transit point and head out to the highlands of Torja or the beautiful Bunaken further north. However people do stay a night to catch the next day flight. In this short time its good to explore what Makassar has to offer. So exploring Makassar in a day is in the focus for all.
Sulawesi was a Dutch colony in the past and thus Fort Rotterdam in the main city is the main attraction. The old age fort was built on top of the native fort before that. Now this is a museum and showcases history of Sulawesi.
Also a great place to visit is Losari Beach Front. This place is great for walk in the evening and catch the sunset while local food is in abundance here.
Stay in one of the many good but cheap hotels in the city close to beach. I stayed at Aston Hotel which is walking distance from the Fort Rotterdam as well as Losari Beach Front. This will help you explore Makassar in a day.
If you want to spend time in the malls, head out to many options or just relax in the hotel. Makassar in a day is very easy.