I am Jewish, and know a lot about the history of the Jewish community in Spain, but I still learned a lot from the guide. She was knowledgeable, went deeper than I expected, and even challenging us, in a good way, like a good teacher. Covered aspects of the three religions and how they affected each other. Highly recommended!
The other thing… I bought the ticket through Oway tours, and paid 37 euros. But then it became a trip with Free Tours. I don’t know if I fell for a scam… what I know is that I would have preferred to tip the guide with a large hand!