The flea market

On the way from the airport of Sabiha to Taksim we saw an area full of people and a nice mess everywhere, we found out was a flea market, and we were actually close to Taksim, so when we arrived even tired and  with ours heavy backpacks we decide to go there, and after a bit of confusion to find the street we found it. Was a right decision, we had a nice couple of hours, speaking with people, having a cup of tea sitting in an old sofa in the street, and even none could speak english we felt so comfortable.
I suggest you to visit it, we were the only tourist but there wasn't any problem.
A chance to see with others eyes Istanbul, for sure genuine.