trivago’s mission is to be the traveler’s first and independent source of information to find their ideal hotel, and therefore the copying of rating scores from any one site would contradict what we believe in.
The trivago Rating Index™, or tRI™, was created to compare all types of accommodations on one equal level. To render an overall, impartial comparison for everyone, the tRI™ uses an algorithm to aggregate millions of guest ratings from across the Internet.
The algorithm takes into account a property’s ratings on a single online source, in comparison to another with ratings on various sources, and adjusts the calculation for the trivago Rating Index score accordingly.
All rating scales are converted into trivago’s 10-point index score, and updates occur daily to ensure the latest, most accurate evaluations.
That’s why it's important to encourage your satisfied guests to leave positive ratings on review sources and the booking sites they used to make their reservations.