I cannot remember my floor being soft but it was not overly hard either.
The steps were a little weak until I bought from RV store some step supports to go underneath when I felt like using them. Rear bumper was strong for both spare tire and bike rack. Did not care for the flimsy screen door but I lived with it. All the appliances worked perfectly including microwave and ac.
There was a recall on the Dometic fridge due to propane leaks and fire hazard that required install of a part but I only used the fridge on electric and never propane. You need to see if your fridge was recalled for repair or not by entering the part number in the U.S. Government recall database online. I never took my in to a dealer because of their common delays etc.
Although they appeared in good shape I replaced tires with good quality Maxxis tires for long x-country trip and used a trailer shop to repack wheel bearings with synthetic grease once a year and they inspected and adjusted the brakes also