It's one of those places that you can not miss if you go to Hondarribia. We did the tour first thing in the morning and it was worth the early start.
In addition to the shrine of the Virgin of Guadalupe, the patron saint of the city, you can see beautiful views from the balcony. You can see amazing views of Hondarribia, the Ria de bidasoa and front Hendaye (already belongs the French Basque Country).
The visit was definitely worth it.