Key legal question
Whether the Art. 257d CO payment notice was sufficiently clear as to the arrears claimed.
Extracted holding
The notice was clear: it identified the unpaid months and the corresponding amount, and the arrears were in fact outstanding at that time.
Extracted reasoning
The landlord specified June and July 2010 and the total of CHF 3,660. The account statement and the tenants' later payments showed those rents were outstanding when the warning was sent.