Medan Selera caters mostly to Malay Cooking. You can find it on the left side of the road going to Bintulu town from Medan Commercial Square before Berjaya Commercial Centre (Li Hua Hotel) and next to a Futsal Center. You cannot miss it if you are driving along that road.
We visited this hawker centre on a Saturday morning. Tried the nasi lemak with daging masak hitam and kuching laksa at stall no D28. The laksa does not taste that great but the daging masak hitam was delicious.
Next to stall D28 was another stall selling Kelantan food which was having brisk business the whole time we were there. Their banner says only open on saturday and sunday mornings so if you want to try Kelantan food then that is the time to visit.