A hallway this pared back can take one serious deep red. Put this up and the whole run of wall gets a pulse: the red check does the shouting, the flamingo’s long neck pulls your eye up, and the pale blue squares keep it from going heavy. Hang it at eye level on a narrow stretch of wall, or low over a bench or console so the bird meets you as you come in. Keep the furnishings simple painted wood, cane, a checked cushion, plain cotton. What it does not want is more pattern on the wall behind it or a busy wallpaper; give it a flat, quiet wall and it looks deliberate rather than noisy. Printed on premium fine-art paper, with real wood framing available if you want a crisper edge.