The company Hafner arhitekti d.o.o., founded by architect Benjamin Hafner in 2014, covers the entire spectrum of architectural and design services, including urban planning, spatial planning, project management, investment calculations, term plans, engineering, and cooperation with subcontractors and other designers in the production of projects. Benjamin Hafner, as an Assistant Professor at the Faculty of Design in the field of interior design, lectures and leads exercises in the course Studio III and the course Construction and Detail in the Interior. In these courses, he imparts practical knowledge to students, focusing on finding a concept that is always part of a building and its surroundings, developing interior construction, individual implementation details, the search for proportions, the play of natural light, materials that create a unique atmosphere in the room, presentation design, and perspective studies, which are the main tool for displaying abstract 2D plans in a realistic 3D space.