Question juridique clé
Whether the lease termination for rent arrears under Art. 257d OR was valid.
Solution extraite
The appellant did not show that the cantonal finding of rent arrears was arbitrary or legally erroneous; the termination therefore stands.
Motifs extraits
The challenge was largely appellatory and failed to meet the strict federal pleading requirements. The cantonal court's credibility assessment and weighing of evidence were not manifestly untenable.