They don't stop anywhere in the Sultanahmet/Old City area, and they don't connect with the Europe trains; change to the frequent Marmaray trains for both purposes.
Waqtigan xaadirka ah ma istaagaan meel kasta oo ka mid ah aagga Sultanahmet / Old City, mana ku xirmaan tareennada Yurub - u beddelo tareennada Marmaray ee soo noqnoqda labada ujeedo.