I went to 인사동.
It was cool for me.

In there I ate ice-cream that is in the bisket shape like stick. = I ate ice cream in a stick shaped biscuit. (Do you mean "biscuit cone"?)

Also I ate wild berries in paper cup. = I also ate wild berries in a paper cup.

I love it so much.

In 인사동, there's many traditional things and performance so many forieners come to 인사동. = In 인사동, there are many traditional things and awesome perfomances which attract a lot of foreigners.

At that time, I saw many forieners too. = At that time, I saw a lot of foreigners, too.

Isn't it cool?

NOTE: I heard a lot of good things about Insa-dong. I think it's indeed a cool place. ^^