Istanbul also well known with it's night life in he clubs and restaurants and dinner cruises on the bosphorus.
Also Bazaars makes istanbul more interesting. There are Historical bazaars as Grand bazar and Egyption bazaar. You can spend shopping time and enjoy your shoppings and barganings.
In old city You will find mosques, churches and palaces. Hagia sophia Blue mosque, Topkapi palace, Underground Cistern and hipodrom you can visit in oneday including grand bazaar.
Istanbul has very good bus connection with other cities. There are 3 Otogars and you can find buses to any city in Turkey. You can easly travel by bus from istanbul / to Istanbul. But we highly recommend your to book your buses a head. Because buses are very busy.
You can travel to istanbul by bus easly but if you come from far destination etter you catch overnight bus that will save a night accommodation and also arrive in istanbul early morning you can reach your hotel easly.