I'm thinking of booking an award flight: Europe - IST - BJV in Biz with both legs on TK. To avoid getting into BJV in the middle of the night, one option is to schedule a long layover in IST. Would I be able to access the Business lounge if I am connecting to a domestic flight? I realize I wouldn't be eligible for the sleeping rooms since my international leg is under 8 hrs but I figure spending 7-8 hrs in the Business lounge has got to be more comfortable than the Domestic lounge.