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

https://wiki-canyon.win/index.php/The_Definitive_Guide_to_Bedside_Table_Height_for_Platform_Beds

The golden rule for bedside tables is comfort and accessibility. Aim for a height that sits 5 to 10 cm below the top of your mattress. This prevents you from reaching awkwardly for your water or lamp