Arts and Crafts is a very particular style and it isn't modern. It's pretty much the opposite of modernism - which celebrates the industrial, mass produced, the streamlined - while A&C venerated the handmade, harking back to the pre-industrial, in a medieval revivalist manner, during an age of industry and mass production.
In some ways A&C shows a hipsterish obtuseness about making everything as difficult, handmade and expensive as possible. It's better than that - far better designed and more functional, less painfully idiosyncratic - but it is a way of showing off wealth by owning cripplingly expensive hand-crafted, well-designed plain things, rather than affordable luxury.
Whereas these days, A&C wooden furniture is very affordable. Handmade tapestries instead of 'nod to the impoverished middle classes' William Morris wallpaper, not so much. Neither the wallpaper.
I might think that a person could be referring to the famous WM quote' have nothing in your home that is not useful or beautiful'. Basically 'does it spark joy?', a Victorian Marie Kondo.
But that could mean anything at all, design-wise.
So I'd think handmade tiles, old oak furniture and a lot of nature influences.