Try something different for lunch. The people who work at this small booth located in the River Market are the friendliest around, happily explaining any dish to you. The place serves the popular Gyro, as well as Hummus, Tabouleh and Eggplant Dip. Try the Souvlaki, which is made of thin layers of pastry dough, stuffed with feta cheese and spinach, and cooked to a golden brown. Then, order...