My wife describes Sebastian and his tour as: The best tour she has had in Poland. We have taken several here and in Portugal on this trip. I think what made the difference is that instead of drowning one in dates and names (certainly they are used), he tells a story from the beginning of the tour that then concludes at the end of the tour. If you get a chance, he will do a beautiful job of describing WW2, the Jewish and Warsaw uprisings.