There are lots of great places to have a coffee, tea or lemonade in Istanbul but it is impossible to visit them all in a few days! However, we have found some nice places which I want to recommend, and one of them is Sokak Kahvesi. A little bit hipster, very much visited by locals and near by the galata tower.
There are plenty of options to eat good food in Istanbul. However, vegan or vegetarian options were quite hard to find when not previously organized. Luckily we have discovered Tahin, a great spot with lots of vegan and vegetarian options!