Istanbul: go to a bath/all of the mosques/on Bahre's pub crawl and be amazed, prepare for mediocre food tho
Istanbul was INCREDIBLE: architecture of the mosques is unbelievable and the city itself is super amazing, a little touristy and expensive but the Grand Bazaar and the bath houses make it worth it! The food is just okay but make sure you eat the meat that comes out of the burning clay pot that they break open! it's AMAZING! Go to the Asian side for a quieter and chill vibe, go out in taksim at night!
Insider Tip:Go to trip advisor and read about Bahre's pub crawl and DO ITTTT you will NOT be disappointed!