Vienna is one of the most beautiful cities in Europe. It has a wonderful imperial past and an incredible contemporary art scene. Music is everywhere and it has the best patisseries. I you don't have too much time, you should try to make the most of it! This is a litle guide to a lovely long weekend in Vienna.
First day: Kärtner Strasse, Staatsoper, Stephanplatz with Vienna’s famous cathedral, lunch in Figlmüller (http://www.figlmueller.at). Delicious and huge Schnitzel!!!! After lunch Graben, Kohlmarkt and, of course, the wonderful Hofburg to feel like Empress Elisabeth for a while. Townhall, Burgtheater, Parliament and dinner at Rebhuhn (http://www.rebhuhn.at).
Second day: Schönbrunn palace. Just beautiful! Rent a Fiaker, that is, a two horse carriage, to make a little tour through the gardens. It could sound a bit cheesy, but it is really nice to crawl under the blankets, enjoy the views and just let the driver decide where to go.
Third day: visit the Musikverein, enjoy Belvedere palace with its wonderful Klimt collection and spend the afternoon in the Museumsquatier.
Don't forget Vienna's famous cafes: Central, Demmler and Sacher. They all are marvellous, no doubt, but you will eat the best cakes at Gerstner. Try the Dobos Torte! Much better that Sacher, believe me.