This is where Turtle, her mom, and Archie had rooms, the Key West Colonial Hotel.
It's mentioned a couple of times that Archie wore a Panama hat.
"I've lived long enough to learn the truth: not all kids are rotten, and there are grown-ups who are sweet as Necco Wafers. And if you're lucky - lucky as an orphan - some of them may even end up being your family." These are the last sentences of the book, but did you notice that Turtle makes the same comparison to Necco Wafers in the first sentences of the book? Her opinion has changed, however, based on what she's learned during the story.