Cause my kids aren't old enough I'll tell you what I did.

When I was young and needing help I worked at the dining table.

When I was older and able to complete the work on my own (maybe from late primary school?), I worked at a desk in my room where it was quieter. For what is worth, I had a desk in my room from quite a young age (early on in school) and I liked sitting there doing 'work' (drawing pictures, writing stories) whenever I could!

EDIT - DD1 has a little table in her room that she likes to use for 'drawing' or stickers. Sometimes with us and sometimes without.