Karen and Alexandra,
I feel you: I was very anxious about this, too. I also decided to take the exam in my bedroom, because it was the only room I knew I would have no distractions. And in the end had no problem at all.
I had to send 4 photos of my workspace, taken both facing the desk and from the back of it, as well as from both sides. In the instructions, they show you from where to take each of the four photos, approximately.
As a precaution, I removed everything I had on my nightstands and dresser - even if nothing was within arm's reach. I put a desk and a chair in the bedroom, but had nothing around me or under the desk, so I cannot really tell whether it is acceptable. I know that items on the walls are subject to inspection, but again I have no experience with this kind of inspection.
Gabriella