Maybe I’m just face-blind or being dense but the photos from the scene of the crime look like a different dude than the ginning hostel check in guy. The jackets and backpacks are different. Although people can have multiple jackets and backpacks. We don’t see much of the shooters face but the eyebrows look different. Although, people can pluck/shave eyebrows. I guess the happy hostel guy would have come forward and been like “WTF?” and “I have an alibi” if it wasn’t him?
The pockets are alone to give away that Hostel guy is wearing a “field jacket” cotton blend while Agent 47 is wearing a ECWCS cold/wet weather top. He could have two jackets and all that but they’re different jackets.