Try this, Call Ah Ling - 05-4915306 , 05-4911328 ( she's a vege vendor in Brinchang and has 2 nicely furnished apts. in Tanah Rata with cooking facilities, astro and 3 rooms.

Alternatively contact Lily Holidays. They have 4 apartments in Royal Lily. Call Chai Hok Kwi/Wong Keat Yeen.
                              019-5487896, 019-4252253, 013-5255222

Try this last, he is a commission agent and handles about 50 apartments in Tanah Rata area namely , Desa Anthurium, Carnation Park and Royal Lily. I am sure this guy have apartments. His no. is 012-5066070