Wall sconces just speak old house. The fact that they just emerge from the wall and glow right there on the spot has long been a source of fascination. Later in life the fact that an electric line is hidden in the wall framing became more apparent, but as a child, sconces were a never-ending mystery.
Which is one reason why mounted sconces with a cord hanging down to an outlet are anathema. It just seems so messy and even trashy. So that half-hearted method of getting lights up off of floor and table surfaces just isn't going to work here.
Instead, spending the money to have a contractor fish through the electric line seems worthwhile. The hallway is a place that really could use two pretty wall sconces. The hall is short, wide and almost like a room unto itself. There are four doors and a wide entrance to the space, so there really is no room for any other type of lighting fixture.
There is a lot of traffic through the hallway, what with doors into the bedroom, office, guest room / utility room and bathroom. So the sconces must not extend too far out away from the wall. Tiny little sconces with a pretty old-fashioned flowered shade could be pretty. They wouldn't send out too much illumination, but there is an overhead light socket that can be retrofit to a more powerful ceiling mounted light to brighten up the space when necessary.