DynastyMattressCoolBreeze Essential 10 Inch Queen Size Cooling Gel Memory Foam Mattress Bed Extra Firm

Has anyone had this mattress yet for about a year? Still love it the same? Still not "overheating" or sinking badly? Would you still recommend it?

Can I put a mattress cover on this mattress?

Twin adjustable bed

Can we srill use this if we just want it as a regular mattress, even though it's for an adjustable base?