Visit 21ChelseaNYC.com for more details. 21 Chelsea offers stylish apartments in New York City. These Chelsea apartments feature oak hardwood flooring and modern kitchens complete with stainless steel appliances. Enjoy our 24-hour concierge and doorman, premier resident services, and breathtaking views of New York City from our rooftop terrace. In addition, enjoy convenient access to the 23rd Street subway station, Union Square, and the vibrant nightlife of Chelsea. Quaint cafes, unique shops, and art galleries add to the neighborhood's diversity. If you're looking for luxury apartments near Chelsea Manhattan, tour 21 Chelsea today for upscale living. No Fee Apartments.