Wonderful, circa-1957 Spring Valley stunner totally transformed & located on one of this mature neighborhood's best blocks. Four levels of perfectly blended space replete with hardwood floors, terrific natural light, Carrara marble baths, & considerable closet/storage space throughout. Large public rooms with recessed & accent lighting, gorgeous kitchen with stainless appliances, oversized living room, sun-filled dining area, breakfast nook, convenient mudroom (can be converted back into a fuller-sized garage) & oversized windows. Upstairs, the owner's suite with multiple walk-in closets & large bath with soaking tub & walk-in shower. The second level also offers 3 additional bedrooms - each has good light & closet space - 2 full baths, & laundry room. Top floor is fully finished & the perfect hang-out/kid space. The lower level offers a large rec room & au pair suite (or 5th bedroom and full bath). Opening to lovely, level rear yard with flagstone patio & plenty of space for your enhancements All this, & just steps to Mass Ave with Millie's, Compass & Starbucks Coffee, Wagshal's Markets, Crate & Barrel, etc and additional service providers in this exclusive enclave of Upper NW.