Meticulously designed by renowned architect, Peter Pennoyer, this spectacular full-floor condominium residence boasts grand entertaining spaces and luxurious private quarters. Spanning approximately 3,966 square feet, this sun-flooded home has five bedrooms (or four and a library) and five new bathrooms. The highest level of finishes were used throughout. Features include chevron pattern quarter sawned oak floors, multi-zone central air conditioning on Nest thermostats, a humidification system, LeFroy Brooks fixtures, custom-designed Lowe of Maine olive knuckle hinges and doorknobs, and radiant heat in all the bathroom floors.An elegant entrance gallery with a barrel-vaulted ceiling and St. Laurent marble floors flows into a magnificent 26'8" long living room with three oversized windows facing south overlooking the beautiful tree-lined street. Through pocket doors is an elegant library (or fifth bedroom) which also faces south and has two closets. There is a hallway bathroom with a concealed walk-in shower and a hallway coat closet. Also adjacent to the living room is an exquisite dining room providing the perfect space for large-scale gatherings. A beautiful bar with an antique mirror backsplash and a Subzero wine refrigerator connects the gallery to the kitchen. The bespoke Smallbone eat-in kitchen has a center island with ample seating as well as space for a breakfast table. There is custom cabinetry with walnut interiors, White quartz countertops, Calacatta Caldia marble backsplashes, and coffered ceilings. It is equipped with state-of-the-art appliances including two Subzero refrigerators both with two freezer drawers, a Wolf six-burner range with a vented hood, a Wolf oven, a Wolf convection oven, a Wolf microwave, a Wolf warming drawer, two Miele dishwashers, and a sink. Off the kitchen is a laundry room with a LG vented washer/dryer and a sink as well as a large walk-in pantry closet.As for the private quarters, the gorgeous master suite affords stunning views overlooking the neighboring gardens and four closets, two of which are walk-ins. There is a lavish en-suite bathroom finished in Sugar White stone marble slabs; it has two sinks, a Tea-for-two marble-clad bathtub, a walk-in steam shower with a rain head shower, and a separate water closet. There are three additional bedroom suites and three bathrooms all finished in White Carrara marble and Pompeion Grey honed marble mosaic tiles two with bathtubs and one with a shower. There is a storage bin. 151 East 78th Street is a boutique white-glove condominium that was built in 2016. Residents enjoy the highest level of service including a full-time doorman, a porter, and a live-in resident manager. Amenities include a gym, yoga studio, library, garden, and a bicycle room. In addition, the building has an emergency generator.