Icmeler is lovely wee place. Marmaris is much more, tacky but close enough to visit. The castles and marina area are lovely. You can get a water taxi from Icmeler beach to very close to the marina for a few lira.
Another cheap trip worth doing is a water taxi in the opposite direction to the next village along, Turunc. A very unspoiled wee village but get the bus or Dolmus back. You go high into the mountains and the road snakes around hairpin bends. You get fantastic views along the coast. Scary but worth it just for the experience.