I was traveling to the Warsaw area on business with another work colleague, and wanted to finally visit Auschwitz after several other trips skipping it. I selected XperiencePoland somewhat randomly, as you will find several tour companies offering tours to Auschwitz from Warsaw. XperiencePoland was great to work with via email. They arranged the entire long day from start to finish; from the Warsaw Central train station, to Krakow, then a car to Auschwitz. After a 3 hour tour of Auschwitz/Birkenau they even included a walking tour around Krakow. As promised our driver Kris met us as we stepped off the train in Krakow, and took us to our tour of Auschwitz. He went above and beyond by helping interpret for us at the main entrance, getting us through security, etc. After driving us back to Krakow, we had time to grab a late lunch/early dinner, then we met Anna who took us on an excellent and informative tour of old downtown Krakow. She walked us to the train station and even to our exact platform so we would be sure and catch the right train back to Warsaw. This is an excellent tour company and very helpful and responsive. If you don't feel like going off on your own on such a trip, you should consider contacting these guys. I would not hesitate to use them again if I make it back to Warsaw, as they offer many other activities and tours.