If the mattress looks something like this (like a separate pillow with recessed edges sewed to the mattress) then it’s a pillow top. If the mattress has flush edges like this with a “box” on top … then it’s a Eurotop or a box top. Post #2 here has more about the differences between them.
While it would depend on the specifics of the design and what was over the cotton and how well the mattress can breathe, having cotton deeper inside a mattress can make some difference and have a higher risk for mold or mildew in more humid environments yes. This doesn’t mean it would be an issue … only that the risk would be higher.
I’m looking forward to your feedback after your visit and of course any comments or questions you may have along the way.
