For the best look and comfort, aim for your bedside table to sit level with the...

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

For the best look and comfort, aim for your bedside table to sit level with the top of your mattress or just 5 to 10 cm below it. Most UK bed frames work perfectly with a height between 55 and 70 cm