I did the Santa Cruz walking tour in Sevilla. There was a little mixup in the booking, and the company still honored the tour even though it was not supposed to run on the day I booked. Very professional of them to schedule the tour since I could not go another day.
The guide, Julio, was amazing. I basically had a private tour of the Santa Cruz quarter and he took time to explain a lot of the history and stories of this part of Sevilla.
I would highly recommend this company and the guide Julio! you will not be disappointed!