333 Central Park West #33
Between 93rd and 94th streets

$3.995 million
Maintenance: $2,347
Daniel Douglas/Corcoran

A corner Classic Eight transformed into a six-room apartment, this Upper West Side co-op has 50 feet of frontage overlooking Central Park, including the Reservoir. About 2,000 square feet, it has a living room, dining room, kitchen, master suite (with a dressing room), two additional bedrooms, and a second full bath. Other prewar details include 10-foot ceilings, parquet floors with marquetry, and crown moldings. It is located in a full-service, pet-friendly building with a gym, bike room, play room, and private storage.

29 E. 64th St., #5D
Between Madison and Park avenues

$2.995 million
Maintenance: $3,365
Carol Mann/Stribling

A former Classic Seven, this six-room, Upper East apartment, one of two on each floor, is one block from Central Park. About 1,800 square feet, it contains a foyer, living room, dining room, kitchen, master suite, second bedroom, maid’s room, and two additional baths. There are three exposures, with the living room and master bedroom facing south. Other details include parquet floors, nine-plus-foot ceilings, and a decorative fireplace. This prewar co-op is located in a full-service, pet-friendly building.

1185 Park Ave., #7B
Between 93rd and 94th streets

$3.75 million
Maintenance: $3,560
Daniela Kunen/ Prudential Douglas Elliman

This Classic Six apartment in Carnegie Hill has a living room, master suite, second bedroom, and bath that overlook Park Avenue. About 2,400 square feet, it also contains a gallery, dining room, kitchen (plus pantry), maid’s room, and bath. Other details include beamed ceilings, herringbone floors, an arch separating the gallery from the living room, and a wood-burning fireplace. This co-op is located in a full-service, pre-war building with 24-hour doorman and concierge service, a large courtyard, and gym, among other amenities.

201 W. 89th St., #8A
Between Amsterdam Avenue and Broadway

$2.799 million
Maintenance: $1,673
Sandra Smith/ Brown Harris Stevens

This newly renovated, corner Classic Six is in an Emery Roth building on the Upper West Side. About 1,800 square feet, it contains a foyer, living room, kitchen, master suite, two bedrooms, a study, and an additional full bath. Design details include herringbone floors and beamed ceilings. It has three walk-in closets and every room is wired for cable and Internet. Building amenities include full-time doorman and concierge service, a basketball court, gym, and door-to-door mail delivery, among others.