Question juridique clé
Whether the warning notice under Art. 257d(1) CO was sufficiently precise
Solution extraite
The notice was sufficiently clear for the September 2010 rent and heating items, but the item labeled 'balance rent August 2010' was unintelligible and could not alone justify termination.
Motifs extraits
A notice need only make the unpaid amount determinable without dispute. Although one item was unclear, the tenant could readily identify the unpaid September rent, parking rent, and heating balance.