This is a short tour, so I would not recommend it if it's your first time in Paris. But if you've already seen the main attractions and know a bit about them, it's worth to take this tour to go into the specifics of the Montmartre neighborhood.
I don't remember the exact name of the guru, but he was from Mexico City. His style was very engaging and that's the main reason for the 5-star review and recommendation. Not all walking tour guides are as pleasant and interactive as him, so I highly recommend that you book the tour. The information given was also on-point and the Q&A time was appreciated.
Samuel is a good storyteller, a patient and pleasant person. I’m happy that he was our guide and enjoyed the tour, despite the inconvenience(street protest) that caused it to be longer than originally scheduled.