1) Punggol Park Bliss Restaurant - Food is not too bad and its a scenic place to hang out (fresh air!!!!) Beer is pretty cheap on some days. Bus 62 goes there straight and takes about 15 mins
http://food.asia1.com.sg/revamp/wineguide/wineguide_20050911_006.shtml2) The Grapevine @ Upper Serangoon - Quite a good place for yuppies with wine, drinks, food, pool table and TV screen for soccer. Chill out place along the Upper Serangoon main road opp a Chinese temple. About 2km after Kovan Mrt heading towards Serangoon Central. Bus 136 goes there and is about 2 bus stops away from Kovan. Parking is behind the building.
3) Hong Kong Cafe @ Heartland Mall - Food is not too bad though some items are pricey becayse of the cheap ingredients they use. The baked rice is qute yummy if I remember correctly. Bus 136 stops right at the station
4) Serangoon Gardens (if you dont mind travelling a bit further) Five Star Hainanese Chicken Rice is yummy! Better than the Poh Sing I feel. Its right next to the small Guardian Pharmacy opposite the big bus stop. The zi char there is pretty good too! Quite affordable for larger families. For places to chill out, try Liquid Kitchen which plays chill-out music in Velvet UNderground. Plus, there are many karaoke pubs and pubs to drink the night away. Bus 136 goes there. Takes about 45 mins but faster if theres lesser traffic
Other than the chicken rice, the duck rice, Lee Wee Bros Nasi Lemak & otah, 1.90 Hup Lee Nasi Lemak/Beehoon Mee, ba chor mee and yong tau foo(facing the interchange) are among the hot favourites at the Kovan Hawker Centre next to Heartland Mall. If you want some desserts or just sit and chill out after your dinner, I think you can also check out
http://www.whitetangerine.com.sg/ White Tangerine Cafe at the Paya Lebar Kovan CC which is just in front of the bus interchange. I personally have not tried it before but I will do so this month hehe