Peruvian blog Los mil rostros de la ciudad [es] tells about an encounter [es] its blogger had with writer Mario Vargas Llosa on a street in Miraflores, where many of Vargas Llosa's novels take place:

I met Mario Vargas Llosa when Populibros published his book The time of the hero, during a military government.
[...]
So, that morning when he passed along the entrance of my building, greeting everybody with his usual courtesy, I felt the urge to ask him: “was it here?”, as we always believed that where my building stands now was the precise location of the house where he lived in his youth. But I didn't dare to.