To get the perfect bedside table height, aim for your nightstand to sit roughly...

https://www.oscarbookmarks.win/aim-for-your-bedside-table-to-sit-5-to-10-cm-below-the-top-of-your-mattress

To get the perfect bedside table height, aim for your nightstand to sit roughly 5 to 10 centimetres below the top of your mattress. This makes grabbing a glass of water or your phone effortless while you are in bed