I will coming from Split and take the earliest bus going to Dubrovnik (5 am is the earliest bus). Then after I arrive, I'm just going to explore to the city for 2 days. But I'm thinking doing a daytrip or overnight in Mostar in Bosnia-Herzegovina. Because I've heard it's beautiful there at night. Then I'm coming back to Dubrovnik the next day. What do you guys think?
It's always a matter of "how much time do you have?" Mostar is definitely nicer at night after the day trippers have left - much quieter. I spent a single night there, which was plenty for me. It's not a huge town.
But for me, getting up so crazy early to catch at 5am bus would possibly negate the possible benefits of spending a night. I had a car, and driving was easy, so I'd probably do it that way again.
No need to spend the night. As stated Mostar is very small and hilly. You can definitely see all in one day. We were there last September, just for a quick tour and lunch, and it wasn’t crowded at all. Don’t know if this tourist season will be more crowded.
If you go to Mostar, try also to go to Počitelj, about 30 km away. It's a preserved town, and worth a stop.
I am very glad I spent the night in Mostar. I stayed at the Muslibegovic House, and that alone made the overnight stay worthwhile. It's a charming hotel that is also a museum. (I hope they're still open; their website doesn't seem to have been updated in years.)
Mostar is beautiful at night, and I met some very friendly people in shops and eateries who would have been too busy to chat during the day when there were more tourists.
I agree that a stop in Počitelj is worthwhile.