to be good (at); to go well
to look (taste, etc.) good
to hold one's liquor; to be able to hold one's drink
この料理なかなかいけるね。
This dish is pretty good, isn't it.
あの店のラーメンはなかなかいけた。
The ramen at that restaurant was pretty good.
新しいデザインはかなりいけている。
The new design is looking quite good.