I don't know if this would suit your purpose, but my sister and I are heading to Munich at the very end of November. We will stay there one night for their Christmas market, then take the train up to Nuremberg, where we will stay for two nights. We will visit the Nuremberg Christmas market but were torn about whether we should take a day trip to Regensburg or Bamberg.
I'm thinking now that we will head to Bamberg's market as it is supposed to be really wonderful. It's such a beautiful city anyway that I would imagine going to the Christmas market there would be a really lovely experience.