For a comfortable bedroom, your nightstand should sit between 55 and 70...
https://www.mediafire.com/file/ci4j8luw7hfr284/pdf-67918-84454.pdf/file
For a comfortable bedroom, your nightstand should sit between 55 and 70 centimetres tall. The golden rule is to keep the table surface roughly 5 to 10 centimetres below your mattress-top