French mattress help

I love my current mattress, which I think is a hybrid mattress about 13 in thick. The label says it consists of innerspring construction, 32% fiber pad, 35% polyurethane foam pad and 33% blended cotton batting. There is a soft cover to the mattress which says cotton on it. Sadly, we are moving to Paris and I must leave my mattress behind. I am trying to figure out what is the best equivalent or upgrade from what I have. We were recommended Bonnet Literie but it’s hard to figure out if the specific technical details online are similar to what I have or useful for me. I love our bed because it’s firm but soft, can’t feel my husband toss around in bed. I’m a side sleeper and very sensitive to lower back pain.
Is anyone familiar with the Bonnet Literie brand or can recommend a brand similar to the specs I have?
Here are the specs I found: https://www.literie-bonnet.com/wp-content/uploads/2019/04/mezzo.pdf