Kevin,
If you go through Ovacik towards Hisaronu from Fethiye, Past The Grand Ucel (Water Park) keep going down the road to where it starts to get built up a bit, you pass a block of shops on the left then 4 Seasons is at the start of the next block.
You will not be dissapointed, Sat night is normally a party night in there. and Mo does other theme nights.
I have added a placemark on Google Maps (dont know if it will show for you but the position is at 36°34'18.25"N 29° 8'39.71"E
Enjoy
Paul