Sultanahmet district is a quite central place. The Blue Mosque, the church of Saint Sophia, Topkapı Palace, Basilica (Yerebatan) Cistern, Grand Bazaar, the Mosque of Sokulu Mehmet Pasha, Archeological Museum, The Museum of Turkish and Islamic Handicrafts are within the distance of few minutes by walking.

Ataturk International Airport 18 minutes by car
Grand Bazaar 4 minutes walking
Egyptian Bazaar 4 minutes walking
Underground Cistern 4 minutes walking
St. Sophia 4 minutes walking
Blue Mosque 3 minutes walking
Topkapi Museum 5 minutes walking