I lived in the French Riviera for five years, and the houses there have very distinctive architecture, especially when you live in rural areas, or live close to old villages.
For the novel, I created Gabriela’s home from a melange of houses I had seen in the region. I copied and pasted architectural designs of many different houses in my head and created the finalized version that you read in the novel.
I have posted pictures of houses that will give you an idea what the houses of the region look like.