Turkey's trip turned out to be not-a-good trip for me. In fact, I regret to describe this trip as a total disappointment, as all I've seen is the unpleasant side of Istanbul.
In summary, I don't get to see Istanbul as what it is famous to the world. Although I stay there for 4 days, I have spent most of the time in traffic congestion, travelling from a messy town to another messy town to meet the not so interesting customers, till 7-8 pm.
From this experience, it's not too much to jump to the conclusion that any other places other than those tourist attraction is not worth going at all. Or one would simply find himself or herself trap in traffic congestion everywhere around Istanbul, and disappointed when reach the small town which is dirty, messy & non attractive.
Most of the time, the cars just won't form in line, and I heard my agent cursed the other drivers for at least 10 times in a day.