My hallway was probably the most forgettable part of the apartment, with plain walls and almost no decoration because there isn't much room for furniture. I decided to treat the wall itself as the decoration and went with a scenic design. It changed the whole feeling of the space without making the corridor physically narrower. I also like that you can choose something personal rather than settling for another generic geometric pattern. For anyone considering the same idea, this collection is worth browsing: https://costacover.com/collections/wall-mural