Maybe Singapore Changi truly is the nicest airport in the world. That's like saying yours is the nicest circle of hell: true as it may be, you're still in hell, and no one really wants to be there.
Vienna is much less ideal than Bologna for the 6-hour layover, but that doesn't mean it's not dizzingly magical. Float through this city and just try not to hum the Blue Danube Waltz to yourself.
Everyone knows about airport layovers. That block of time that's usually too short for you to leave the airport and see the city you're in, meaning you have to make do entertaining yourself with overpriced chain restaurants, books off the New York Times bestseller list, duty-free shops, and maybe choreographing a dance routine on the moving sidewalk.