Why not put a very high upholstered headboard in front of the mirrored wall? You'd have a dramatic statement with the bed, and the mirror would just reflect everything around it. Actually having mirror behind your bedside tables and lamps is very nice. It adds sparkle and bounces the light around the room.

I like Cynthia's suggestions, you can also consider a graphic wallpaper as an accent wall and keep things simple.

Yes, Dytecture, that would be perfect if the mirrored wall is not the one where the bed has to go. In your example the mirrored wall is beside the bed, so the wallpaper continues in the reflection. I really like that effect.

Thank you everyone, love the suggestions, I'll go with the all headboard as the mirror is behind the bed!