Sultanahmet
One neighborhood you are absolutely must visit is Sultanahmet, this part of the city is essentially what used to be called Constantinople and where the city first sprang to life.
Beyoglu
Located just north of the Golden Horn and connected to the old city center by the Galata Bridge, the neighborhood of Beyoğlu is one of the liveliest and most colourful districts of Istanbul.
Akaretler
This sexy district of Istanbul is beautifully restored with charm and style and is now the destination for the ultra hip
Ortaköy
Ortakoy is one of the nicest neighborhoods of Besiktas districts on the European side of Istanbul, right under the first Bosphorus bridge.