Can toilet is good at South East
Yes, toilet can be there in SE. Avoid toilets in center, North-East or South-West corners of home.
If you have an attached toilet, it shouldn't be there in SE or SW corner of the room.
You can also get more info about toilet in east direction here:
Toilet lies in East of plot and when it concern attached it lies SE of room. Is it okay?
Can toilet be placed at east portion of plot,and southeast of room?