First Class spoiler questions

[Doom_ak]

So may be I'm not smart enough but how do I need to understand that the contact we are looking for in room 5? Just from the newspaper?
And also doesn't it looks loke bad gamedesign that you need to bruteforce the Room Service to resolve the puzzle?

[Mockingcrow]

You dont NEED the newspaper...
Listening to the first cabin, you deduce its a henchman, and the defector is a woman.
2nd cabin is a man
3rd cabin is a man and a woman speaking foreign language
4th is you
5th is a violinist playing
6th is ANOTHER assassin.

That leaves MAYBE the 3rd, but most likely the 5th.

As for the room service... I dont see what the issue with game design with the plot device that you need to harass the room service people to re-open the pneumatic tube system.