Ortakoy (Ortaköy) is an authentic neighborhood on the European bank of Bosphorus. It is famous with open-air handcraft bazaar; as well as cafes, bars and restaurants with reasonable prices. I’d recommend you to take a tour in the bazaar, then have a seat in a cafe by the sea. You may try hookah (nargile) if you are interested. Afterwards, if the weather is nice, I’d also recommend you to take a walk by Bosphorus heading north towards Bebek.