For the perfect bedside setup, aim to have your nightstand sit between 5 and 10...

https://fionafreshmaids.com/the-ultimate-guide-choosing-the-perfect-bedside-table-height-for-a-65-cm-mattress/

For the perfect bedside setup, aim to have your nightstand sit between 5 and 10 centimetres below the top of your mattress. This keeps your phone and water within easy reach while you are in bed