Phillipe will be the person to unlock Jacob's room, yes. I leave it up to Bronte and Cat, as to whether or not Josie and Alex were present when Phillipe unlocked the room; he would have wanted to have at least one witness there to confirm that he a) knocked, called out, knocked, repeatedly, b) did not snoop or take anything from a guest's room, and c) when entering and it turned out to be a crime scene, promptly left without disturbing any evidence, and locked the door.