Kernrechtsfrage
Whether the termination was null because it was allegedly manifestly abusive and contrary to good faith
Extrahierter Entscheid
The termination was not void; under tenancy law, a termination that breaches good faith is voidable, not null.
Extrahierte Begründung
Art. 271 CO is lex specialis to Art. 2(2) CC, so even a manifest abuse of rights in a tenancy termination leads only to annulability, not nullity.