Joint Sale – Residential and Investment Project. A truly rare opportunity in the Portimao riverside area is presented: two buildings sold together, fully renovated structurally, combining historical heritage, contemporary comfort and high profitability potential. Located on one of the city's most emblematic streets, a few steps from the Arade River, the marina, restaurants and cultural areas, these properties benefit from a surrounding area of strong appreciation and growing demand, both residential and tourist. CASA TARTARUGA. Fully Completed Historic Residence – Ready to Move In. Casa Tartaruga underwent a comprehensive and thorough rehabilitation, preserving the original architectural elements and incorporating modern, high-standard infrastructure. Structural and Technical Interventions. * Completely new roof with high thermal insulation. * Electrical and plumbing systems completely renovated. * Thermal insulation of walls and floors. * Fully insulated and finished floors. * New windows and exterior doors. * Kitchens and bathrooms completely renovated. * Elevator with access to all floors  except the loft . Turtle House Layout. Ground Floor – Unique Multifunctional Space. An impressive floor where historical identity is dominant. * Original vaults preserved. * Natural stone walls. * Antique ship mast beams. * Underfloor heating. Infrastructure prepared for kitchen island installation. Also includes. * Independent WC. * Elevator. * Basement/wine cellar with more than 10 meters. * Electric fireplace with handcrafted tile. * Door with safety glass and privacy. Ideal space for a social area, reception, or main living area. First Floor – Residential Floor. Accessed by a magnificent original wooden staircase. * Authentic restored wood floors. * Original interior doors. * Windows with thermal and acoustic insulation. * Ceilings with special historical finish. Composition. * Double living room  living + dining . * Gas  electric  fireplace. * Equipped kitchen. * Guest bathroom. * Elevator technical room. * Large custom-made walk-in closet. * 1 bedroom with ensuite bathroom. * 1 suite with access to outdoor space. * Library / TV room with original fireplace. Discreet internal connection to the Extra House and the outdoor jacuzzi. Second Floor – Residential Floor. Privileged views over the Historic Bridge, offering river/sea views. * Spacious living area with gas fireplace. * Two en-suite bedrooms. * Bathrooms with underfloor heating. * Large and private terrace. * Jacuzzi and outdoor shower in natural stone. * Electric blinds on the rear facade. * Traditional shutters on the front facade. Includes access to the large attic. In summary, Casa Tartaruga features. * 4 suites. * Library. * Large walk-in closet. * Spa and jacuzzi area. * Elevator. * Private terraces. * Garage with internal access to Casa Extra. * Large attic. A residence of rare character, where heritage and comfort coexist with elegance. CASA EXTRA. Structurally Renovated Building – Works Included in the Sale. Casa Extra will be delivered with all structural interventions completed, allowing for final customization of finishes according to the investor's strategy. Included Works. * Completely new and insulated roof. * Renovated electrical and plumbing systems. * Pre-installations for kitchens and bathrooms. * Insulation of walls and floors. * Insulated floors  rough finish . * New windows and exterior doors. * Rough interior and exterior finishes. Extra House Configuration. * 3 generously sized 2-bedroom apartments. * 1 studio apartment. * Two mezzanines. * Large attic. * Terrace and patio. * Garage with internal connection to the Turtle House. The Extra House is scheduled for completion in mid-2026.