Flooring options in an RV are as varied as in any home. However, there are issues with RVs that homeowners seldom face, that being vehicle weight. The selection of stone and ceramic flooring can contribute significantly more weight than alternative floor coverings.
With the concentrated living space of a RV comes concentrated use of any floor covering. Thus, the use of carpets will require careful focus to keep clean. Something difficult with pets, kids and visitors.
Stone and tile floors can be so hard, so slippery, transmit and reflect sound. Laminates are better, but maybe not compliant enough for bare foot comfort. Solid vinyl planks and tiles are easy to install, look like the natural surfaces they replace, and don't crack or transmit as much sound. Easy to clean too.
I would like to propose a flooring which is very durable, self healing, kind to bare feet, sound absorbing, infinite variety of color, easy to install and easy to care for. That is cork flooring. Libraries install cork flooring because of the sound absorbing properties. Cork is chosen for many kitchens because of the comfort it provides.
http://www.corkfloor.com/
Yes, it does require periodic care, similar to laminate floorings. In exchange you get a very comfortable, quiet and durable floor.