If you go to
www.garantibank.com and click on turkey at the top, then banking, then interest rates, it gives you information. Its the YTL accounts that give the best interest.
The couple who live next door to our apartment sold their uk house and deposited £100k, they earn £20'000 interest per annum, and it costs them approx £5000 per annum to rent their villa, and they live off of the rest.