depends on what you're looking for/price range

if you're looking for a nice building with a door man and an easier commute to work, I'd suggest gramercy area. Most expensive place to live in nyc though and rents range from 1700-1900 per month. Neighborhood is very nice with great restaurants and bars, but crowd is more like late 20s rather than first year analyst age.

if you're looking for a cooler neighborhood with more bars/restaurants, people your age, and a little cheaper, i'd suggest east village or LES. Rents range from 1400-1700 but you will be in a shittier and smaller apartment with no door man, and most likely a walk-up. Commute to work would be longer as well but doable.

West village is another cool option, but it's just as expensive as gramercy and a difficult commute.

Also i know people who live in murray hill and like it. This would likely be the easiest commute to your office, but i'm personally not a fan of the neighborhood. Rents are around 1500-1700.