The living room and the bedroom

In my bedroom I have a bed with two cushions, on the right side of my bed has a there is a bedside table, on the left of my bed I have a there is a big wardrobe and opposite of across my bed has there is a big television.

Excellent! 

You can say,

"Opposite to my bed there is a big a television."

"There is a television across my bed"

In this sentence "across" is better.

In my bedroom I have a bed with two cushions. On the right side of my bed there is a has a bedside table, on the left of my bed there is a big wardrobe and in front/across of my bed, there is a big television.

:)