The primeclass lounge noted above is what TK uses for F passengers, I believe. At least the description sounds like what we got. It was nice enough though I think that the level of service received depends on how you gain access. I doubt day-pass folks get a cooked to order breakfast. Still, the bar and snacks spread was decent enough though the lounge is a bit small. No real help in there for booking issues - I ended up going to the regular TK lounge when I needed that stuff sorted out - but the lounge is pretty nice overall. I really do need to get my photos online...


ETA: Pix from the IST primeclass lounge here.