You should avoid toilets to be in Northeast corners as it is a severe Vaastu dosha, it can create severe problems in health, problems in progeny, accidents, and can also bring unnecessary stress.
If the toilet is attached to the bathroom itself then it should be on the West or North-west side of the bathroom and preferably a few inches above the ground.
Northeast is the most very pious direction in Vastu and is owned by Lord Shiva, Northeast is occupied by Vaastupurush’s forehead. So one should avoid the placement of the toilet/bathroom here.
Also, Toilets in the Southeast direction should be avoided according to Vaastu. The person living in the building which has a southeast toilet has unexpected losses, legal issues, unexpected problems, accidents with electricity, and problems in electricity gadgets as Southeast is owned byAgnidev.
Toilet in the southwest is also not good. The people have to bear financial issues, unnecessary expenses, losses, Southwest is the area ruled by Rahu; One should avoid drainage in this area as this will cause chronic health problems.
Toilets should be placed in such a way that they face the north or south and never in the east or west.
One should avoid making a Toilet under the stairs. Similarly, the toilet is not good in the center area ( bramasthan) of the house.
The toilet should never be made near the puja room or the kitchen. Also, the kitchen and the pooja room above the toilet are not Vaastu friendly. Only a toilet can be made over the other toilets.
Water storage & taps should be in the East, North, or North-East.
One should prefer light colors in the toilet.
A small window in the toilet should be on the East, West, or North wall.