I need to light a space inside a set piece that has a ceiling.
Approx 4m wide and 6m deep.
Any advice on getting a inside a house feel and still light up the actors.
Hope I explained it well enough.
Switch the rake on the ceiling so it's lower toward the audience, and higher further away (which matches the audience's sightline, anyway). Cut out a cove in the ceiling, and light through there.
Duplicate natural sunlight by lighting through the window with a very powerful light. Be aware of shadows.
Light it in a truly natural fashion, with practicals -- floor and desk lamps. Embrace the shadows.