Apartments are hard to find in central Madrid, but Mafalda Muñoz and Gonzalo Machado of Casa Muñoz really scored with this space on the second of a 4 story Neoclassical building, though it apparently took them a year and a half to make it legally theirs. They maintained original elements and really leaned into the classical vibe whilst adding modern touches for a really eclectic space. I really love that red paint in the photo below.