It's called the "city that never sleeps" for a reason. New York City should be on every 20-something traveller's bucket list. Manhattan's burgeoning NoMad area is a good place for people in their 20s because it's located in the heart of Manhattan and is the centre of many of New York's unique shopping areas. Stay at Innside by Meliá, which focuses on sustainability, a holistic lifestyle, music, and local culture.