What surprises most Indian travellers about Malaysia is how quickly it stops feeling foreign. The Tamil signboards in Brickfields, the banana leaf rice, the Hindi film songs in some of the older markets. And then, around a corner, a Hokkien hawker stall that has been making the same noodles for sixty years, or a Peranakan mansion with a courtyard garden and carved wooden doors that stops you completely. That layering is what Malaysia does better than anywhere else in South-East Asia.
The contrast between Kuala Lumpur and Borneo is one of the most dramatic in the region. You fly two hours from a city with a world-class metro system and arrive in a forest so old it pre-dates the Himalayas. Proboscis monkeys, pygmy elephants, ancient cave systems. Most people stay on the peninsula and miss this entirely. The ones who go to Sabah or Sarawak always say it is the part they remember longest.
On the food, I will just say this. Penang is one of the great food cities on earth. Not in South-East Asia. On earth. If you go to Malaysia and do not spend at least two mornings eating your way through George Town, you have not used the trip well. The hawker culture there is old, serious, and affordable in a way that is becoming rare anywhere in the world.