21 Chelsea apartment homes features studio, one bedroom, and two bedroom apartments for rent in New York, NY. Located in Chelsea, 21 Chelsea is steps from the 23rd St subway station, Union Square, and the vibrant nightlife of Chelsea. With amazing view of the Empire State building, 21 Chelsea offers a rooftop terrace, a 24-hour concierge, and onsite laundry. Your new 21 Chelsea apartment features oak hardwood floors, individually controlled heat and AC, and stainless steel appliances, while some apartments also feature private terraces. Schedule a tour of your new, 21 Chelsea apartment home today.