It’s my first interior I made in Blender. I’m still amazed about that software since I switched from C4D.
And the future for Blender looks great!
So, C4D of course has a pretty solid layer system, but I get used to the collection system in Blender and it works just fine.
Most of the accesoires I got from chocofur.com. I made a course there wich comes with a lot of models: https://store.chocofur.com/interior-visualization-course-blender-2-80