A small apartment in a nondescript location where both creators and creations alike can spend time.
From Twist's post: The setting: a room with a lit fireplace, squashy armchairs/sofas, and a (full) attached kitchen and a well-stocked bar. The minor details of the room change as needed depending on what's going on. Authors have some degree of "authorial" powers over the setting. (In the past that's mostly meant spontaneously-appearing food plus there was a floating picnic at one point.)
I made a sub-thread for this in case people want to try a different setting, or use different ocs. c: