To be specific, the first two rooms shown here helped me get on board its strategic use. In addition to drooling over the black sconces in the first image, I appreciate the choice of pink because it is unexpected and brings a warmth that something like gray couldn't have mustered. (It's also worth mentioning that those walls are upholstered in pink linen.) In Image 2, the the dark blue pillows and mirrored white lattice doors help anchor the room. In both pictures green accents add helpful contrast.
Pale pink also can stay in neutral territory. Paired with white and linen, it makes for a very calming albeit "girlier" atmosphere. Especially in a bathroom pale pink gives a flattering glow (Image 3 shows Farrow & Ball's "Pink Ground"). In Image 5, French designer Caroline Gomez uses a light pink to highlight an architectural detail and a colorful book collection without making the room top-heavy.