Try Palmiye Estate agents, they have an office opposite the BP Garage (by the new little marina). Ozzi speaks English and they are pretty good, we rented through them for a couple of years. Unfortunately rents have increased quite a bit, we were paying 1,100 TL for a 4 bed triple villa (furnished but rather old fashioned) no pool, until Nov last year. Also look on Sahibinden.com, good luck with your search, as other say you are better looking when you are here as anything worthwhile goes very fast.