To get the perfect bedside table height, aim for your nightstand to sit roughly...
https://www.mediafire.com/file/ci4j8luw7hfr284/pdf-67918-84454.pdf/file
To get the perfect bedside table height, aim for your nightstand to sit roughly 5-10 cm below the top of your mattress. This makes reaching for your phone or a glass of water feel effortless from bed