How firm should a base innerspring layer be?
I’m a side sleeper. My plan is:
Base layer: 8 inch simple innerspring medium or medium-firm
Transition layer: 5cm high density polyurethane foam
Top: plush down / down alternative topper (I like the pillow top feel)
Not looking for specific recommendations because I don’t live in the US or any other country where you can easily get a lot of the well known brands. My basic question is what is ideal for my base layer? Should I stick with firm or medium?