There would be two dolmus routes, I think, that go past the Gustorante.
1. The Sahilden bus from Calis to Fethiye - this does not go to Gunlukbasi at all.
2. The Huzur Evi bus ( old peoples' home ). This goes to Fethiye ( not Calis ) along the Market road past Gustorante, turning in front of ALO 24 and then snaking its way to Fethiye and appearing just past Home Proof.
So to do the journey you want would take two Dolmus.