Istambul is a lovely place to go. The people is extremely pleasant, and you will feel at home... in a very exciting place. Enjoy the clash of cultures and the introduction of the modern age. Nice people to look at and great foods
Travel tips
Some of them will try to cheat you. There are two different fares, one during the day and another one from midnight (double price).
Ask in your hotel how much should be some of the more common trips to make sure they don´t try to charge you more.
Ask the taxi driver to leave you at your hotel door so if you have any problem the people from reception can help you.