Your main goal in Nar Shaddaa is to find Jedi Master Zez-Kai Ell, but in order to find him, you have to first get noticed by the Exchange. Perhaps this is really how it looked 4,000 years before the events in Dark Forces.
You'll still find shady people here however, and the most quests of any area in the game. You'll find that this Nar Shaddaa is much different, as if a cleaner bot came and washed away all the graffiti, trash and anarchistic energy from the place. If you're an old timer like me, you may have played the original Dark Forces game, where one of the great levels of the game was on Nar Shaddaa.