Personally I would avoid sleeping in different rooms unless there is a serious issue to demant it.
My own marriage fell apart due to lack of love. She simply forgot that love is more than physical act.
Eventually I moved out of the bedroom hoping to "wake her up"!
It didn't work. Separation folloved.
Then divorce!
I can't imagine a marriage where partners sleeps in separate rooms permanently.
Oldfashioned perhaps. That's me.