This is a small SPA in a mixed-use building in a city centre. Located on the upper floor, the place was once occupied by two squash courts. So we removed all the walls we could, then the space was divided in two floors. We left the entrance hall, make-up studio, barbershop, cosmetology and all of the stuff in the lower level, and put all spa cabinets to the upper level. Each spa cabinet was equipped with  "oculus" skylight.  And, according to the smoothness of spa, we rounded all the corners in the halls and made the skylight round as well.