Question juridique clé
Whether the lease termination of 12 October 1999 was contrary to good faith under Art. 271(1) CO.
Solution extraite
The notice was not abusive and remained valid because it pursued a legitimate purpose: recovering possession in order to sell the property in better conditions.
Motifs extraits
A landlord may in principle terminate to sell the property free of tenants. No pretext, contradiction, or gross imbalance was shown; contractual preemption and renovation investments did not create a right to stay beyond expiry.