Aneta Mazur
Google
Good falafels, very friendly staff, low prices (starting from 18NIS for falafel in pita, 35NIS for falafel on a plate). Very good pita and laffa bread.
They have some tables, so it's possible to sit down and eat while enjoying the view of a very alive street.
Sometimes there's a line, mostly of tourists as Moshiko has their menu in English - most of the places around, with similar street food, have their menus in Hebrew only, so they don't catch that much attention of a hungry tourist.
Cons - they don't have toilet; they don't serve tap water (only water in plastic bottles - what bothers my ecological conscience - for 7NIS), they serve food only on plastic plates.