Key legal question
Whether the cantonal court arbitrarily counted the apartment as having five rooms rather than six for statistical rent comparison
Extracted holding
No arbitrariness was shown; the lower courts could exclude the dining room and rely on the five-room statistical category.
Extracted reasoning
The appellant failed to demonstrate that the room-count criteria used by the courts clearly diverged from those underlying the cantonal statistics. The contractual and move-in documents did not compel a contrary finding.