From our knowledge, there are three Gunung Berembun in Malaysia. Yes, mountain with the same name but located at different state.
Hiking in the Cameron Highland region feels different from the other hikes in Malaysia. Probably due to the higher altitude which makes one more comfortable with the cooling weather.
We recently hiked Gunung Berembun via Jungle Walk Trail 3. Get more information about the trail, how to get there etc at the link below.