“We’ve rebuilt the entirety of the Promenade ring to match the show,” Cryptic said. “That means all of your favorite spots are there, including one you’ve already got a sneak peek at in the recent episode ‘The Renegade’s Regret’ — the Security Office and its Holding Cells. In addition, we’ve updated or added the Infirmary, the Bajoran Temple, the Klingon Deli, the Jumja Stand, the Replimat, and of course, Garak’s Clothiers. Oh, and how could I have forgotten, Quark’s Bar!”
To expand and flesh out the station, the developers used blueprints from the TV show and screenshots from several episodes. Much of the show was referenced, in fact, filling up a folder with 2,600 screenshots to aid in the reconstruction process.
Source: Star Trek Online. Thanks Castagere!