Small sign of life here! Been trying to get some nice results out of Corona for C4D for the past weeks between job hunting. Bought a HDRI from Peter Guthrie too, really makes a difference.
This is the bedroom area of an apartment I designed. The render is still a bit noisy (2,5%).
Used Substance Painter for the wooden furniture and Marvelous designer/Zbrush to create the bed and curtains. Still a lot to be done :)