Hemingway and his first wife, Hadley, lived very modestly in Paris. Hadley had a small trust that enabled them as young newly weds to go abroad and for Hemingway to focus on his writing. He did earn money from his journalism but the trust helped significantly.
When Hem met and fell in love with a young and stylish writer for Vogue in Paris, Pauline Pfeiffer, he felt guilt but he also had fewer money worries when he left Hadley for her good friend, Pauline. Pauline was from a wealthy family from St. Louis. Her family made money in Pharmaceuticals and her Uncle Gus funded the purchase of the home in Key West. Hem dedicated A Farewell to Arms to Uncle Gus.
Still, it can rankle to live in a house paid for by your wife’s family and Hemingway wrote in The Snows of Kilimanjaro through the main character, Harry, that the rich had ruined Harry’s fervor for writing bravely and writing all that he needed to. The parallels are not too subtle as to Hemingway’s own life,. If you visit Key West, there is still a penny cemented into the pool surround. Supposedly Hemingway was irritated with the escalating costs of renovation and the pool in particular. It was one of the largest in its day. He told Pauline in a fit of pique that it was taking his last penny, so she threw one into the cement as it was setting. It’s still there. The woman had a sense of humor!
Key West is a lovely home, more elegant than Cuba, but Cuba was wilder, rougher, and I think more to Hemingway’s taste.