In a few weeks I'll fly TXL-FRA-ICN, first time in LH business class, therefore access to the Business Lounges to kill 2 hours between the flights.
The ICN flights obviously leave from the dreadful C gates. Physically I know the way from the A to the C gates, but which lounge would you recommend for the transfer? I would prefer one with easy access to a smoker cabin

For that reason the lounge at the c gates seem to be unhandy as you have to leave the security area when you want to go for a cigarette...