Ideal bathroom dimensions/size

Hi All,

What should be the ideal/comfortable bathroom dimension/size ? In my future house, proposed measurements are 8'x4'6" , 5'7"x6'8". Are these fine?

will this be comfortable? or do i need to modify?

how best we can accommodate the bathroom fittings? i am planning to fit wash basin, European closet, and shower

suggestions are welcome.

Ideal bathroom dimensions/size