Hard to hear wouldn't exactly what Sirius was thinking at this point and time. He was thinking that copious amounts of alcohol was the right course of action. For a good bit too he'd wager. There wasn't going to be anything easy about dealing with this, the death of his friends, and everything else going on. Sirius could feel it deep down in his bones. He glanced over at Harry, giving a nod. "It is. Hopefully we'll all stay here." His voice was quieter than it normally was, any bravado that it'd once had gone. All of them died.
He snorted softly, looking over at Harry with a somewhat amused smile. "The Grimm, really? James always said I looked scary from far off, I suppose it isn't that much of a stretch." Hope was what kept him alive, that made sense. Hope was a valuable tool, and if one ever lost it then nothing mattered. Reaching over he placed his free hand on top of Harry's, giving a gentle squeeze. "And know that I'd do it all over again, even if you were rotten." Sirius's family had consisted of the Potters after everything went to bunk with his own, he owed it to James and Lily to do the right thing - which was what he'd always done for the two of them.
He patted the top of Harry's hand again, feeling his sadness as he spoke. "Don't feel bad. We were bound to find out one way or another, and it's better that it comes from you than from some other person." It seemed like more and more from their world were making their way to the hotel, and so in the long run it was for the best that Harry did tell them about their perspective futures. "So, onto happier things. Let me see pictures of your children and tell me about them."