Designer Stephanie Kienle Gonzalez and her husband Chris Gonzalez fell in love with South Africa—they were struck by land and the bush life surrounding the city—10 years ago. But at the time, they were living in Manila, so they visited whenever they got the chance. One day while in City Bowl, a residential neighborhood in Cape Town, Kienle Gonzalez stumbled across a 1920s Arts and Crafts home at the foot of the mountainside. “I still remember walking in…we were smitten,” she recalls. “It had...