Return individual guest reviews for one property from a live stay search session, alongside an aggregate sentiment score on the same 0-10 scale as reviewScore on a search result.

Reviews come from a third-party aggregator that matches on property name rather than on a stable id, so coverage is best-effort. availability distinguishes the outcomes: available has reviews, empty means the property was scanned and none were surfaced, pending means it has not been scanned yet and reviews may appear later, and unavailable means the lookup could not be completed. Unknown or expired searchSolutionId returns 410 OFFER_EXPIRED.