We arrived at the meeting spot at the recommended 10mins before the tour started at 6pm but unfortunately the tour guide did not turn up until 6.45pm. We had a prompt response from Antonio at least and he was apologetic, but we left after 40mins of waiting. Live location was given and I joined the group without my friend (she was over it by then!). Ivan was very sweet, enthusiastic and tried to give detailed information but kept having to switch between English and Spanish for all participants of the group, so it felt quite disjointed. I stopped to take a video and lost the group (probably my fault I should say!!), so I didn't experience the full tour. I'm sure Ivan was a lot of fun and a good tour guide, but we had a really bad experience with the overall organisation sadly, especially compared to so many brilliant walking tours I've done around the world. We were offered other tours to compensate but we were only there for one night.