We booked on Klook with KrakowDirect. The driver MATT was fantastic. The Salt Mines were great and the guide there was really good. Auschwitz was an experience, and the guide was good for Auschwitz I. Unfortunately for Auschwitz II-Birkenau, the weather suggested it was going to rain, and she clearly didn’t want to be out for it (even though the other tour guides were continuing). As such, she cut the trip short and only took us to the women’s barracks, cutting the tour time down to a meagre 20-30mins. Twice she asked if we all just wanted to leave and not do the tour, several of us objected and asked about going by ourselves, and she said it was up to us. We did go alone, which meant we had to experience the monument without the guide’s knowledge and insight.