Have a look on Sahibinden.com, they are supposed to be "from the owner" but most are handled by estate agents. Susie is correct in saying you usually pay 3 months rent to start, 1 month rent, 1 month security deposit and 1 month emlak fee. Yes the rent does increase 10% per year. You could try Palmiye Estates on the way to Calis, we rented through them for the last 3 years we were there, Ozzy (if he's still there) speaks good English. They used to have quite a few in the areas between Fet and Calis. We were lucky that our landlord was a decent bloke. Good luck with your search.