You may guess from my username that I enjoy Turunc.
Its a lovely place day or night - no-where near as busy as
Icmeler - but I suppose it depends what you are after. Its full of good quality resturants and I've never had a bad meal in 12 visits at different times of the year. There are also a few bars and plenty of shops to have browse in, open as usual until 11/12 every night. Its a very relaxing place and none of the hassle you get in
Marmaris - as in Icmeler you'll soon be treated as a friend once they get to know you.
Regarding the trip over the mountain, its not as bad as some make out - but I suppose it depends if you are scared of heights - I personally love the ride up and down the mountain. On the other hand you can always catch the water taxi over and back but you would have to check on running times (its only about £1 dearer each way via boat so hardly expensive).
Let me know if you want to know anything else.