Real World article(written from a Production point of view)
Paramount Stage 4 is located on the Paramount Pictures lot in Hollywood, California.
Stage 4 was one of four sound stages used in the production of Star Trek: Deep Space Nine throughout its run (1992-1999).
The stage housed sets representing interior DS9 Ops, living quarters, and the cargo bay, the latter two sets each incorporating several corridor segments.
The remaining DS9 interiors were filmed on Paramount Stages 7, 17, and 18.
Floor plan of Operations center set
Floor plan of DS9 sets on stage 4