Warm minimalism keeps the restraint of minimal design (fewer, better objects and clear surfaces) but replaces hard white and chrome with texture and warmth.
Use a tight palette of natural materials: oak or walnut, linen, wool, limewash or clay plaster, unlacquered metals. When colour is quiet, texture does the work.
Hidden storage is essential. Plan closed cupboards for everyday clutter so the things you choose to display can breathe.