Cafe DaNi belongs to Niel from Teen Top, and is not actually located in Seoul, but in Anyang (안양) which is a little south of Seoul, and is Niel’s home town. But never fear! You can still get there by subway. You can take the blue line, Line 1, and it should take maybe 40 minutes from Seoul Station.
These pictures and lots more, gotten from here
Address: 안양시 안양동 714-163 카페 다니 / Anyang-si, Anyang-dong 714-163
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