With the full model and the camera positioned I began the next step: the lighting. It's good to take a look at the artificial lighting because it speaks often to how the client imagines lighting.
As I mentioned earlier I had already given some thought to how I wanted to handle this issue: diffuse lighting coming from the window background, contrasting with the golden hue artificial lighting that I planned to use in the bathroom. I applied a method I've used in the past. Diffuse illumination is emitted by a large cut sphere to which I applied a VRay light material with an HDRI.