Hi - I'm looking for a few ideas for a short trip to Vienna. I live in London so I'd prefer something with an Austrian flavour rather than "International" and prefer casual atmosphere to "fine dining" Preferably not very young, trendy & noisy but we like a buzzy atmosphere and the food is the most important. A friend who went recently recommended Hansen in the Stock Exchange - is this a good option ? I LOVE cakes so where to go for afternoon tea please ? Finally, any light lunch recommendations in between to museums. We are staying on Lange Gasse. Thank you !