Sultanahmet. The historic peninsula puts Hagia Sophia, the Blue Mosque and Topkapı within walking distance. Convenient and atmospheric, though touristy and quiet after dark. Good for: First-timers and monument-focused trips.
Beyoğlu / Galata. The 19th-century European quarter around İstiklal Avenue and Galata Tower buzzes with cafés, galleries, rooftop bars and nightlife. Central, walkable and full of character. Good for: Nightlife, food and repeat visitors.
Karaköy. A former docks district turned design-hotel and specialty-coffee hotspot at the foot of Galata. Waterfront, hip and well connected by tram and ferry. Good for: Design lovers and foodies.
Kadıköy (Asian side). Local, leafy and lively, with a produce market, meyhanes and bars but few tourists. A short ferry from Europe delivers a more residential Istanbul. Good for: Slow travellers wanting local life.
Beşiktaş / Ortaköy. Bosphorus-front neighbourhoods with luxury hotels, palaces and waterside cafés under the Bosphorus Bridge. Upscale and scenic. Good for: Waterfront luxury and views.