Hi Topper,
You’re certainly correct about this and the Aria (along with other hotel mattresses made by major manufacturers) are just lower quality and inflated price versions of similar consumer mattresses made by the same manufacturers which in turn are themselves lower quality/value mattresses compared to many other alternatives that use higher quality materials in the same or lower budget ranges. There is more about hotel mattresses in post #3 here and the posts it links to.
The first place I would start your research is the tutorial post here which has all the basic information, steps, and guidelines that you will need to make the best possible choices … and know how and why to avoid the worst ones (including hotel mattresses).
Once you reach step 3 in the tutorial post … the better options and possibilities I’m aware of in your area are listed in post #2 here for the Greater Los Angeles region or post #2 here for the Santa Barbara/Ventura area.
Phoenix