Thanks for finding that. It's interesting, because I have spent some time looking at how the rock could have been thrown from the parking pad and through the window, and I came to the conclusion that the right inner shutter (from the inside) was most likely closed. Additionally, in trying to understand why the rock was aimed at the left (from inside the room) side of the window, I wondered if the left inner shutter was open. That is, in order to understand the trajectory of the rock, I arrived at the conclusion that is consistent with what Filomina said about the shutters, even though I didn't know that this is what she said about the shutters.
Something else that I've wondered is that although there were no bars on the window at the time of the murder, if the window was broken, could the wooden frame have been used to hoist someone up to the window ledge in the same way that the newly installed security bars were used.
It is still very unusual that none of the glass from the window fell to the ground below. I have seen the usual reply to this, suggesting that investigators did not look for evidence below the window, but that simply isn't true. So the question is, if Guede did break the window and did scale the wall, is it simply an unusual situation that none of the glass fell from the ledge to the ground below as he climbed onto the ledge and into the window? We know from the video of the athlete that he was all over the window ledge as he climbed, so it does seem unusual that the glass on the ledge was not disturbed.
Additionally, Guede had been caught inside places (the nursery school), but he didn't attack anyone, instead he was passive. What would make a break in at the cottage different, where he would murder instead of do what he always did in the past?
