For most people, having an in-house artist means tacking a few children’s drawings onto the fridge. But this east-end condominium has become a showcase for work by the owner’s spouse, an artist from Miami who has brought those...

Take a small jewel, cut and polish it with care, and its sparkle and shine can rival that of a larger stone. The same holds true for small living spaces. So when designer Linda Mazur took on a...