Hi Esther! Yeah beds maybe a shader domain or part of a group. I think the shine is wrong. There is a bit of shine on several things, I agree. I would check that. Using a highlight map or a highlight percentage usually works best. Color, highlight, shine, bump should all be adjusted rather than everything at 100%. Also I don't think a jail would be that dark. It seems too dark to see detail. I am sure you are probably going for a dramatic look. 25% shine seems like alot. This is a quick render w/ maps and still needs some shading help. But it doesn't have much shine I am sure (obviously sss)...would have to check.

No need to think outside the box....
    Just make it invisible.