Key legal question
Whether the cantonal court arbitrarily found just cause for the tenant's early termination under lease law.
Extracted holding
No arbitrariness was shown in the cantonal court's finding that the landlords' retaliatory conduct constituted just cause for early termination.
Extracted reasoning
The federal court held that many arguments were merely appellatory. The cantonal court could rely on the evidence it selected, and the sequence of events supported a finding of bad faith and retaliatory behavior by the landlords.