From “Empok Nor” (5x11)

Garak has entered the station and O’Brien and the rest of the team arrive.

Garak: Ah, welcome to Empok Nor. 

O’Brien: Thanks for having us. 

Garak: Take whatever you need. My house is your house. 

No matter that the power and lights are on, they’re apparently on super-low Cardassian noir settings. (Imagine Cardassian crime noir. How hard-boiled would that be?)