Which is the best area to live in as a young working professional?

Hey everyone, I just moved to this city 10 days ago and have been looking into renting an apartment either 1 or 2 BHK so could you recommend some good localities I should consider? Preferably with a young ish crowd as I've noticed with most of the cities I've lived in that the more posh societies are typically all home to the older generation as they have the means to afford them and such. Thank you.