I've lived in Istanbul for a little under 3 years. It's safer there than in Rome, Paris or Berlin. Many young people speak acceptable enough English - though some basic Turkish is useful when you do groceries or go eat out. People are generally open and friendly and your neighbor will look out for you.
As long as they don't do things they wouldn't do in front of their parents, they'll be fine.
I'd also recommend to not spend money on alcohol or pork - waste of money.
I've lived in Istanbul for a little under 3 years. It's safer there than in Rome, Paris or Berlin. Many young people speak acceptable enough English - though some basic Turkish is useful when you do groceries or go eat out. People are generally open and friendly and your neighbor will look out for you.
As long as they don't do things they wouldn't do in front of their parents, they'll be fine.
I'd also recommend to not spend money on alcohol or pork - waste of money.