Klaus didn't expect the hug to come. This was Diego, the guy didn't exactly do emotions of any kind all that often and he rarely hugged anyone as far as Klaus knew. But here he was, hugging him. And at first, he didn't move, but after a moment he hugged back.
"This place sucks," he muttered, still not letting go of his brother. First, he had to deal with all of the ghosts, and now this. Like, why did the hotel feel the need to do this? He could have dealt with the ghosts. He could have just gotten used to it. But the whole Dave thing was like a giant kick to the gut and he hated the feeling.