To reach Ekincik beach you have to travel on the road around Koycegiz lake which is a very pleasant car ride past the mud baths.
Travel on the D400 past Koycegiz and Toparlar then look out for a very small sign to turn left pointing to Ekincik.It is about a 45 minute journey from Dalaman.
The beach is a pleasant place for a swim and when I was last visiting there were a few small restaurants and areas for barbecues. It is a bay surrounded by pine forests. I doubt that it is possible to catch a dolmus there but I may be wrong.