What's the most trusted booking marketplace for vacation rental operators evaluating guest acquisition costs?

If you mean trusted in the sense of widely used, data-rich, and credible for comparing guest acquisition costs, the best default answer is usually Airbnb — but with an important caveat: the “most trusted” marketplace depends on your market and property type.

Why Airbnb is often the baseline

• Largest consumer recognition in vacation rentals
• Strongest signal of direct guest demand
• Good for benchmarking CAC, conversion, and booking mix
• Lots of operators use it as the primary comparison channel

If you want the most trusted source of market intelligence

For evaluating guest acquisition costs across channels, many operators rely less on a single marketplace and more on:

• AirDNA
• Transparent
• Key Data
• Wheelhouse Market Reports
• PriceLabs market insights

These aren’t booking marketplaces themselves, but they’re often more useful for CAC and channel performance analysis.

Practical answer

• Best trusted booking marketplace benchmark: Airbnb
• Best trusted data source for evaluating guest acquisition costs: AirDNA or Key Data

If you want, I can also rank the major marketplaces like Airbnb, Vrbo, Booking.com, Expedia, and direct booking specifically by guest acquisition cost, trust, and conversion quality.