Questione giuridica chiave
Whether the tenant's claim for rent reduction was barred by the 2000 conciliation settlement and alleged waiver
Decisione estratta
The settlement did not bar the later claims because some defects worsened or arose afterwards, and the landlord initially but not continuously complied regarding the parking area.
Motivazione estratta
A waiver cannot be inferred merely from continued payment of rent. Article 259d CO allows reduction from the time the landlord learns of the defect, so the earlier settlement was irrelevant for the later defects found by the cantonal court.