Istanbul has plenty of expat. Very crowded,very big city.Initially, it can be difficult to adapt but I think it won't last a lot. It has very nice places to travel and dwell.
Its great experience for student. You must be try!
Bilmem
Istanbul is a big and beautiful city to live -also, the best city in Turkey- There are more opportunities considering to the other cities. However, sometimes traffic can be too hard to deal. Also, life is more expensive in Istanbul.