What to expect
Here your attention shifts from the coast to buildings, squares and the history of the colonial capital. UNESCO lists the historic centre as World Heritage, describing the San Francisco complex among its landmarks. That is a reason to look closely, not to rush through every building in one afternoon.
How it fits into a journey
Reserve a separate morning or afternoon from your accommodation. Choose your arrival and departure points in advance. Save Barranco or the coast for another outing if the centre already fills your day.