The golden rule for bedside tables is comfort and accessibility. Aim for your...

https://front-wiki.win/index.php/The_Definitive_Guide:_How_to_Perfect_Your_Bedside_Table_Height_for_Maximum_Comfort

The golden rule for bedside tables is comfort and accessibility. Aim for your tabletop to sit between 5 and 10 centimetres below the top of your mattress. Most UK beds work best with a table height between 55 and 70 centimetres