This bathroom model has two modes one is Daylight Mode and other is Night mode, so there are two native files.

• Movable Objects

1. Shutters
2. Taps Knob
3. Door
4. Toilet Cap
5. Window Cap

Important Thing

• In this fake indirect lightning is used which reduces noise, brightens the scene and increases render times, so when you change the angle of sunlight or close the window cap

• You can see the video how to setup fake indirect lightning when you want to change the angle of the sun light

• If you don't want fake indirect lightning you can simply delete those area lights but the scene gets darker and you have to increase the exposure of the render, this can cost you longer and noisier renders

The HDRI's for preview are slightly tilted because I didn't rotate it at 90