The coolest seafood market:
上引水產 (Addiction Aquatic Development)

上引水產 (Addiction Aquatic Development)
No. 18號, Alley 2, Lane 410, Minzu East Rd, Zhongshan District, Taipei City, Taiwan 104

上引水產 is a modern seafood market with ten different theme areas serving hot pot, grilled seafood, sushi and fresh food, cooked food, and more. This place is a must stop for seafood lovers who come to Taipei. We were craving sashimi so our group opted to share a few dishes from the fresh food marketplace. If I had more time during this trip, I would probably come back to try the other areas as well. This place is amazingly clean, modern, and beautiful for a fish market. Very hip and wonderful vibe. Also, the toilet seats in the restroom were heated. Come on a nice day so you can sit outdoors!

The best AYCE shabu-shabu / sukiyaki:
Mo-Mo-Paradise

Mo-Mo-Paradise
Bistro 98 Store: Level 5, No. 98, Section 4, Zhōngxiào East Rd, Daan District, Taipei
MRT: Zhongxiao Fuxing

My love for Mo-Mo-Paradise is strong. We came here twice during our 10 day stay in Taipei, and we also seriously considered having it a third time during our 6 hour layover in Taipei on the way back to LA from Seoul (we decided not to, but we did recommend Mo-Mo-Paradise to the guy sitting next to us on the plane). All-you-can-eat sukiyaki and shabu-shabu with a nice view of the city = perfect spot for Taipei's rainy evenings. Love this place. There's not much more I can say.