I asked my colleague and she suggested Red Star (Hong Xing?) for
dim sum...
For seafood, what about no signboard seafood restaurant in
vivocity? How's the food there? and also the location?
If you don't mind paying more, Jumboo Seafood is good.
It is at east coast, serangoon garden country club. I
went to the one at Serangoon Garden Country Club, it's
superb. Like it very much. The other good one is
Long Beach.