Cash-only and appointment-recommended, Nails by Callie Anne runs a single-technician nail booth out of Unit 2 at 141 University Ave in Hillcrest near the Mission Hills boundary. The one-chair, one-tech configuration places the studio in the same single-operator boutique lane that Fancí Beauty Bar works from on the personal-care side of the corridor. Manicures, pedicures, and gel polish services are delivered under a direct client-technician relationship rather than rotating-chair assignment. The small-booth setup supports focused one-on-one bookings with the same technician across every return visit, a continuity model uncommon at larger walk-in storefronts. Solo-operator intake rhythm runs parallel to the boutique pacing at Glow and Co. San Diego on the neighborhood's beauty-skin side. The most detailed project type is a multi-visit custom nail design commitment in which the same technician builds and maintains a continuing art theme across consecutive bookings.