I have a snake plant in my bedroom and I think it's one of the best plants to have in a bedroom and I've found that I sleep better too with the snake plant in my bedroom.
The snake plant also helps to purify the air in your bedroom so that's another plus.
Some other good plants to have in your bedroom are the Peace Lily, Spider Plant, Bamboo Palm, Gerbera Daisies, Golden Pothos and the Common Ivy.
Those are all wonderful plants to have in your bedroom or just in your house in general.