This attractive, prewar, classically laid-out 7 room apartment features a southern exposure and over-looks the trees and historic residences of East 96th street just off of Fifth Avenue.   From the entry, a spacious foyer opens to a well-proportioned dining room and a sun-filled, formal living room.  The private quarters are on a separate hallway with three comfortably sized bedrooms and two tastefully renovated, full bathrooms.  The master bedroom with private bathroom faces south as does the second bedroom, currently used as an informal living room.  There is also a third bedroom, conveniently used as a home office, plus a second bathroom.   A comfortable eat-in kitchen has an adjacent maid's room and bath.  Prewar architectural details abound with herringbone floors throughout the home.  Ceiling height is 9 feet-plus.  Four residences per floor with 24-hour doorman, live-in super and wonderful staff.  W/D and CAC allowed, bike room and laundry in basement.  75 financing allowed, no flip tax.  Includes private storage bin. Pets welcome.  Adjacent to Central Park the Carnegie Hill neighborhood features some of the finest academic institutions, cultural attractions, boutiques and restaurants in Manhattan.