An incredible and rarely available opportunity to acquire a 6-story building perfectly positioned for premium Mixed-Use development (Luxury Apartments, Boutique Hotel, or Corporate Headquarters). Situated on the Prime Commercial Corridor of Fortaleza Street, guaranteeing high foot traffic and exceptional visibility. Six expansive floors, totaling 24,000 square feet (4,000 SF per floor), offering immense design flexibility. Each floor opens to a unique interior open atrium, flooding the space with natural light and optimizing cross-ventilation—a feature critical for high-end residential and hospitality design. Includes an existing, non-operational elevator shaft/structure. In Old San Juan, this rare feature dramatically bypasses the significant bureaucratic hurdles and complex permitting process typically required for new vertical transportation, saving months of time and substantial cost. Features an operational retail store on the ground floor, providing immediate income to offset carrying costs during the planning and permitting phase.