I'd have concerns hygienically if the loo was situated close enough to where I shower that the loo paper got wet over the other side of it.
I've done a couple of these before now and in the smaller rooms it can be a nightmare - that's where this mad modern design gets flawed. The secret to a perfect modern room is to keep functionality - clearly the smaller wet-rooms are flawed in that department - but that's not your flaw.
Tell them the reason the paper will get is because the room shape and window location etc and it's nothing to do with your workmanship
