The Crosbys and John are the first guests at the hotel.
As in, first guests ever.
John signs the guest register while Mr. Crosby goes to take a picture of some guy making a mosaic of Mona.
Crosby comes back in a huff, calling the guy a, what else, pissant. So John takes a stab at talking with him.
The two go back and forth with their chitchat. They get on the subject of Mona. John mentions Frank is a lucky man, and the artist says Frank is, well, something unpleasant.
When John says he's here to write, the man mentions he wrote a book once. It was titled San Lorenzo: the Land, the History, the People.