I was concerned when I arrived having booked our English tour for 4 people on Viator, and the staff said they had us booked in for a different time. But within ten minutes we had our own personal tour guide Pascal, who was so passionate about his job, very funny, knowledgeable and made our personal tour very enjoyable. And despite the mix up, I feel it worked in our favour and we were made to feel very special. At then end of the main tour we spent some time in the courtyard enjoying the vermouth, which was a beautiful setting. All in all, well worth the money.