Krakow was a very interesting city to visit. We spent one day exploring the city. We did a walking tour of the Jewish Quarter and then explored the beautiful old town on our own. The second day we went to Auschwitz. It is very easy to get there via bus from the station- about an hour and a half each way. It was a very heavy experience but something to be seen if you can.
Insider Tip:Don't bother getting a Krakow pretzel- they are better in Munich :P