We are spending a month in Vienna and wanted to do a tour of krakow including the concentration camps, salt mines etc. what is the best way to get there and are there any guided tours that would include accommodations
It's just over 200 miles between Vienna and Krakow, and a scheduled bus is the least expensive and fastest ways to get there. A train is a little more expensive and takes a little longer.
You can go on the following website and get a private driver to transport you starting at 64 Euros each:
There are two direct trains per day from Vienna to Kraków, one during the day (about 6 hours) and an overnight train leaving about 10pm (about 8 hours). The regular fare (2nd class) is about €74 for the day train, and €49 for the night train (excluding add-ons for couchette or sleeper).
Much cheaper are bus connections, although I personally prefer trains because of the more comfort. Flixbus offers four day connections and one overnight directly from Vienna to Kraków. Prices vary in a wide range, depending on different unknown factors; you need to check in the Internet. The cheapest price I noticed doing a random search was €12.