I've just spent a very pleasant 9 days buzzing around the south-west region. Rented a Suzuki DR350 motorbike from Erol Karacabey at Freedom Rentals in Hisarönü and headed off to Lake Bafa, stopping off at the Temple of Hecate at Lagina and Stratonikeia on the way (I detoured down to Iassos but it was too late in the day to look around - that's a massive site, probably needs at least a couple of hours to visit).
Stayed at Mustafa Kaşıkçı's Pansiyon at Gölyaka on Lake Bafa for 3 nights. Did a couple of mornings hiking there and had an amazing afternoon's ride round Mount Latmos along very country roads/dirt tracks, visiting Myos, Alabanda and Alinda (briefly).
Then it was on to Mesudiye on the Datça peninsular, dropping in on Euromos and the Gümüşkesen Mausoleum in Milas on the way. Stayed at Mesudiye for 3 nights at the lovely Gülbahar Pansiyon in one of their cabins in a lemon orchard just 100 metres from the sea. Visited Knidos and the Sanctuary of Apollo at Emecik.
Then over to Kaş for 2 nights at the Hilal Pension (again). And did a circuit up via Elmalı to Termessos and the Karain Cave and down the coast, dropping in on Canmom's place for a coffee, and back to Kaş. Got a speeding ticket just outside Eşen on the way back to Ölüdeniz (whoops - again!).
Here's my route map - http://www.herostratics.com/Stuff/2010Bikeride.jpg



