Just to let you know you have chosen very well with Cenk & Olga - I was involved with real estate in Turkey for a good number of years and would recommend Interturk - no skeletons in the cupboard, no scandal, great friends now and a long list of satisfied customers.
If I could offer just one (and I have many!!) piece of advice it would be to work out exactly where the property you are interested in is. Walk to the prom, or at least get your bearings. Too many people buy a property because they fall in love with it and in the blur of multiple viewings didn't note where it was in relation to bus stops, beaches, shops etc.
Good luck with the search, enjoy it - it shouldn't be a stressful experience and with Cenk I am sure it won't be.