Good, but...
Like a lot of people have been complaining, the first "puzzle" is too vague. It was creative yes, but I'm sure many of us have been forced to use the walkthrough just to get through that trivial portion. Everything else was good, just like the previous installments of this series.
*Spoiler*
To those who are stuck and prefer a hint rather than being spoonfed with a walkthrough:
1) Wien = Vienna. Check the departure (arrival?) times near the ticket booth.
2) Roman Numerals. At the end of the document.
Both "clues" are in the document found in the newspaper.
Something to improve on would be pointer/click system. Visual cues on the screen showing which edges lead us to a new screen or showing would be nice. Having to blindly wave around the cursor and wait for it to turn into a hand is extremely tedious and adds no depth to the gameplay.