Toilet in the NE side is not good. Is it possible for you to use this only for bathing purpose?
Place 3 bronze bowls at the ceiling of toilet in upside-down position in North, East and North East part.
Keep a plant that can absorb huge amount of negative energy such as spider plant (it will help you to clean the air). Also use good air freshener to keep it fresh.
Keep a bowl filled with sea salt in toilet. Make sure to change the salt once a week.
Always make sure to keep the toilet door closed at all times.