A townhouse in Bahía de Marbella, second line from the beach, rebuilt from the original structure around a single idea: how the house affects the people living in it. This is not a conventional renovation. The owners spent years researching healthy architecture and bioconstruction, and the result is a house specified differently from anything else on this coast — materials, installations and finishes chosen for air quality, silence, stable temperature and light rather than for photographs. What that means concretely: Daikin climate control with HEPA filtration; a completely renewed electrical system designed to healthy-architecture principles, including the ability to disconnect selected circuits on the bedroom floor at night; LED lighting with no perceptible flicker and a warm colour temperature throughout most of the house; and an advanced water filtration system serving both drinking water and the whole property. Wood and natural stone, and a quality of light and quiet that is noticeable within a minute of walking in. Buyers who care about this will recognise it immediately; buyers who do not will simply read it as a very well built house. The position is the second half of the value. Second line beach is the knowledgeable choice here — a few metres from the sand, but out of the direct marine exposure that punishes frontline buildings. From the terrace you cross a small garden and you are on the beach. In front, a generous landscaped area with mature olive trees and cypresses gives shade, openness and real privacy. 295 m² with four bedrooms and three bathrooms. Bahía de Marbella sits on the eastern side of town, around ten minutes from the centre. 295 m² built. Four bedrooms, three bathrooms, complete rebuild to healthy-architecture standards, HEPA-filtered Daikin climate control, filtered water system, flicker-free LED lighting, terrace onto landscaped gardens, second line beach.