Key legal question
Whether the lease could be terminated early under Art. 257f CO for using the premises contrary to the agreed purpose.
Extracted holding
Yes. 'Offices' excluded operation of an erotic massage salon; the tenant violated the contractual use clause.
Extracted reasoning
By the trust principle, 'offices' means premises for mainly intellectual or administrative work. The tenant's business did not fit that purpose, and no tacit consent to another use was shown.