Simple window trim suits many architectural styles spanning hundreds of years. Combined with horizontal wall cladding or bead board paneling with plaster above. Suitable for farmhouse style house, servants quarters or attic in more formal house.
Tiny elevator could make this work for a senior. Finish out one garage bay for storage and insulate the door, but leave it in case a second car is purchased. Barn home for a sloped lot. (Double door garage in basement area)