Thanks for your really helpful answers! What kind of roughness map would you recommend? Are there any best practices or resources somewhere for a floor like that?
How can i get the table leg (? Sorry i am german 
) reflecting like in the reference?
I think the outside is reflecting as well?
The right area appears to be darker…how can that be achieved?
How do i get the reflections on the right chair only? When i use reflectioncapture boxes i get light areas on the floor as well.
Thank you so much for the help!
Best Uwe