Ah, I see what you've done: you've completely misrepresented me to suit your own agenda. Magnifique!
What I actually argued was that if Guede (or whoever) had chosen the balcony doors, he would have been faced with two problems that were much lessened by choosing Filomena's window: the first is the sheer extra distance he'd have needed to cover in order to escape if he was spotted breaking in (or if there was someone in the cottage), and the second is that the only way back to the driveway (and the main road) from the ground below the balcony involves a narrow bottleneck at the side of the wall of Laura's bedroom. Any burglar would prefer to avoid confined confrontations if possible, and the exit from below Filomena's window was both fast and broad. The visibility of both Filomena's window and the balcony doors from the main road is actually fairly similar (but from different directions on the road).
And I've actually thought of a third reason why Filomena's window might have made more sense than the balcony: If there was someone inside the cottage (someone dozing with the lights off, for example) who was alerted by the breaking window, they might well have come to the front door to investigate. The only way out from the balcony area meant having to pass the front door area, whereas the exit from below Filomena's window would take any burglar directly away from the front door.