Best placed in the পশ্চিম
West is one of the two placements the tradition is comfortable with for a bathroom — it takes water and waste without disturbing a protected corner.
What the পশ্চিম governs
West is Varuna’s direction, associated with gains that arrive late and with stability after effort. It takes weight comfortably, and it is one of the two directions the tradition is relaxed about for utilities.
Where the স্নানঘর belongs
Bathrooms and toilets are the rooms the tradition most wants kept away from the protected corners — not because of the compass alone but because of water, waste and the drainage that follows them. Where they cannot be moved, the remedies are about containment.