While in Istanbul make sure that you visit one of the cafes where you can smoke a hookah and enjoy some nice Turkish apple çay!
Many Turkish men meet during midday in one of the cafes where they exchange the latest news while they enjoy their hookah also called Nargile and some nice hot çay (Turkish for tea).
We went to a café, which was outside of the Grand Bazaar. Although it is situated in the touristy part of the city, Sultanahmet, there were only two other tables with tourists, the rest were Turkish men and Turkish students enjoying their break and drinking their çay while smoking their hookahs.
Prices were very moderate. We paid 20 Turkish lira (approx. 9 Euro) for a nargile and nine çay.
We also visited some cafes which were recommended by Lonely Planet. Unfortunately most of them disappointed as they were crowded by other Lonely Planet readers I guess… Most of them, if not all, were tourists.