My Ministry licence says "X Pension" but my municipal operating permit says "X Boutique Hotel". Can I market myself using the permit name?

No. Under Article 37/A of the Tourism Incentive Law No. 2634 and Article 16(2) of the Regulation on the Qualifications of Tourism Facilities, a facility must be promoted in accordance with its Ministry of Culture and Tourism licence. Where a Ministry-licensed facility's municipal operating permit shows a different name and type, promotion must be based on the name and type in the tourism licence. Read together with the obligations to give consumers accurate information and to avoid promotion that could mislead or damage the country's tourism, the Ministry of Trade treats promotion under the permit wording as deceptive and misleading to consumers, and can impose administrative sanctions and fines.