“Long story short: I’ve taken a new position in Luxembourg and I have to find an apartment, in a different country, in a reasonably short time.”
The listing site buried agency fees and let each agency quote prices however it liked. So he scraped it with Puppeteer, loaded it into SQLite with Go and mapped it with Python. Three languages to beat one bad real estate website. Listing portals serve the agencies that pay them, not the people renting.