139 E 66Th St

This is a prewar, boutique cooperative on the Upper East Side of Manhattan built in 1918. The nine-story building contains roughly a dozen to two dozen residences with typically two apartments per floor, reflecting traditional Classic‑8 and 6–room layouts. Architecturally the property shows prewar hallmarks — high beamed ceilings, crown moldings, hardwood herringbone floors, and decorative entryways — and units often retain wood‑burning fireplaces, formal dining rooms, and separate staff/office rooms. Interiors vary from fully renovated showpieces with marble baths, bespoke millwork, and high‑end appliance packages to carefully preserved original plans with gracious foyers and large pantry/laundry areas. Common areas include an attended lobby with a canopied entrance, doorman service in extended hours, and a live‑in superintendent. Building amenities are modest and practical: communal laundry, bicycle storage, storage bins (waitlist), and limited on‑site services; pet ownership and pied‑a‑terre use are generally permitted, and the co‑op allows up to 50% financing with a small flip tax. The location on East 66th Street places residents on a quiet, tree‑lined block between Lexington and Third Avenues, within easy walking distance of neighborhood shops, restaurants, Central Park and subway access, supporting a comfortable Upper East Side lifestyle that blends prewar character with modern conveniences.