Did anyone put your newborn or infant onto a normal mattress to sleep instead of a baby cot? What do you think of using mattress because it seems more practical that way.

I feel cot ( or play pen which I used ) is more practical as no need to bend down as much. Newborn has so many up & down. As lo got older , I found mattress more practical as can co sleep. Do what fits you best ! As long as you can keep the mattress area safe. No pets no older jumping kids ( maybe pets are safe , idk)