One suggestion though: For the couch you could add some normal + bump maps for finer detail. Since it’s very close to camera it will be most visible and every little details counts (even though your focal point is on the book). It could use a little specular reflections as it’s leather I assume.
Lighting, samples and everything else is the same. And don’t mind the cushion border, that was just WIP stuff Unfortunately I am out of time now but here you can see that the specular reflection is not very strong, otherwise it looks like a plastic.
I suggest you to mix the specular map with the actual amount where specular reflections are supposed to happen. You can achieve this by dragging the color node from your specular map texture to factor in mix shader.