If a house could express feeling, emotions and awareness, 560 Elm St. would, in its own restrained way, show pride, protectiveness and affection for its occupants.  This comes through from the first step, where a multi-windowed sunroom is paneled in richly toned wood.  Then to the kitchen, which is sized just-about-right to feel like "home"...a large pass through opening reveals the dining room (or 3rd BR), a space that seems to echo from many warm gatherings it has hosted. Adjacent is a full bath, and next to that a generous living room w/gas parlor stove, intimate at one end with the other opening onto a high-ceilinged screened porch. Upstairs are 2 moderate sized bedrooms and a full bath.  The house has a carefully kept secret; behind the slight rise and fence is a peaceful and private 1/2 acre of garden surrounded by perennial plantings & specimens trees. Very convenient to the hospital, N'ton High, Smith Voc, Mill River & downtown Northampton and Florence. Showings begin Sat,11-1.