I call this a studio house. Except for lack of closet space, bookshelves, and studio space, this is great for a single person. But even for just two people, I would feel crowded. Bathroom is "normal" sized tho.
Architectural Designs Modern House Plan has a master bedroom on the top level with a private deck. The main floor has a deck as well and the optional lower level gives you a bedroom and a flex room that can serve as a family room or a third bedroo