Hotel rating systems vary from country to country . Consistent criteria and anonymous reviews make AAA and AA reliable . While the company , which launched in 2000 , bills itself as having `` World 's most trusted travel advice , '' the sheer volume of sources -- and TripAdvisor 's inability to vet them all for accuracy -- make these reviews something to take with a grain of salt . Favor middle - ground reviews on user - generated rating systems .
Hotel rating systems vary from country to country . Consistent criteria and anonymous reviews make AAA and AA reliable . Favor middle - ground reviews on user - generated rating systems .