It’s a real estate catch-22 that frustrates buyers looking in historic neighborhoods like SoHo: They want the traditional look and style of the area’s classic buildings, but also the modern amenities, conveniences and technology of brand-new construction. This is the rare home that blends both. Within the beautiful One Kenmare Square condominium on Lafayette Street — developed by hotelier Andre Balazs — is 51 Crosby Street, a boutique loft building facing SoHo’s best street. The apartment sports the high ceilings, oversized windows, hardwood floors and direct elevator access of a traditional loft, while also enjoying an immaculate new kitchen, a wood-burning fireplace, in-wall speakers, and the luxurious services (including a health club) of One Kenmare Square. It’s the perfect balance of old and new.