I have stayed at the Letoonia. It's right opposite Fethiye. Letoonia have a water taxi to take people over to Fethiye. it used to be free but they charge for it now. There is a dolmus stop right outside the camp gates to take you into Fethiye. If you go into Fethiye you can go to the Dolmus terminus and get one to Hisaronu/Olu Deniz/Saklikent etc., They do sell trips to various locations at Letoonia but doing it yourself will work out cheaper. We took a trip from Letoonia to Tlos/Yaka Park/Saklikent and it was very good.