I live with my sister. Our home is in the Asian side of Istanbul, 15-30 min to European side by the Bosphorus Bridge (Besiktas, Taksim), 20 min to Kadıköy, 15 min to Uskudar Marmaray and ferries (all of these estimated times are changeable depend on the traffic jam, more or less). Direct bus is avaliable for all of those places. Bus stop is 2 min by walk.
Also both Sabiha Gokcen Airport and Ataturk Airport is about 1 hour away.