Interesting ideas: Curtained loft storage above low-ceiling changing room and closet space, ceiling grid for lighting equipment, wall mounted storage. Again with the large side windows for indirect natural light.
The unfussy design of this new boutique in Denmark is offset using simple track lighting. Strip could be added under the kickboard of the counter, whose undulated surface echoes the curtain folds at the rear of the store.
30+ Useful Ideas To Use & Decorate Under The Staircase Space