The term 'Havana Houses' refers to the traditional style of housing found in Havana, Cuba. Casas, which is the Spanish word for houses, is a five-letter solution to the crossword puzzle. These casas are typically two-story buildings with a balcony and a courtyard, and they are often painted in bright colors. They are a popular tourist attraction in Havana, and they are a symbol of the city's unique culture and history.