Istanbul?

Haha, depending on what time you get in there on the night, id get a turkish bath first, then go get some proper local food after which just ask your hotel how to get to the city centre drinking district. Most places are all the same, but if you want somewhere that the locals go to, look for a place that looks like a kip but doesnt have cheesy euro pop on and you will be grand. I suggest you ask your hotel how much it will be in a taxi as they like to rip tourists off. Everywhere takes euro's so dont worry bout it, but if you have dollars, even better!