@valerostudio said:
There is 2 ways to approach this type of rendering.
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The other way, which makes for a real nice rendering is to place a ceiling plane on your model. Use a SketchUp 2-sided material in V-Ray and make the front face (should be facing into the plan) a white color and make the back face a material that is 100% transparent. Then you want to add some interior lights by using IES or spots and some planar lights at your window openings, and then render the view. Essentially, what happens is that V-Ray renders with no sun flooding into the room from the hole in the ceiling, but keeps it transparent because the face that is facing the camera is 100% clear.Give it a try.