Quark's ranged over the three levels of the Plaza. On the first level was the the main bar, dabo and dom-jot tables, several storerooms, two offices, customer and staff refreshers, and the entrance to the three-level holosuite arcade. At one end of the bar stairs led up to the second and third levels, at the other end was an open, funicular-style lift that also serviced the other levels.
After the original Quark's was lost in the Destruction of Deep Space 9 in 2383, Quark relocated his business to Aljuli on Bajor, near to Bajoran Space Central. Once construction of the new Deep Space 9 was complete, Quark opened a new establishment there, and left the profitable Aljuli Quark's under the management of former dabo girl Treir. The new Quark's opened for business a few days before the starbase was officially opened. (ST - The Fall novel: Revelation and Dust)