What to expect
Museo Larco introduces Peru before the Spanish conquest. It is in Pueblo Libre, not on the Miraflores waterfront. Choose a few objects you really want to look at; you do not have to finish the collection today.
How it fits into a journey
Make Larco the main visit of a morning or afternoon. Allow separately for the journey to Pueblo Libre, then leave room for the garden or something to eat. Arriving late in Lima is no reason to rush through the galleries.