I will be staying in Istanbul for 3 weeks beginning Oct. 10. I've never been to the Black Sea area and really want to go there. Due to other commitments, I'll probably have only 3 or 4 days. Is this possible? If so, what do you suggest? And how should I go about it? I'm thinking by bus, but what are the best destinations? I don't mind covering a lot of ground in a short period of time.