I'm quite the fan of Opiano. My sister's Korean friend recommended this place, so we knew we had to come here. The service here was pretty fast and good, it's a self-service so there weren't a lot of interaction apart from the cashier. The cashier was really nice and friendly, he showed us the difference in sizes super quickly between small and regular bingsoos. Must I say, their red bean bingsoo was PHENOMENAL, I'm definitely going back for more! My mother and sister also ordered some food - a sundubu jjigae and some tteok bokki. They were both quite good, but I'd say the tteok bokki was quite average. I'd still say the bingsoo was the highlight of the experience in Opiano though. It's worth a visit just for that. I'm so down to try other flavours on my next visit!