Firstly, I think you should notify the three schools that you're not interested in that you will be accepting an offer elsewhere.
Then, think about the schools with the best academic fit and cultural fit. I'd list the pros and cons, and consider the following questions.
Where will you be the most successful and happy? Where would you like to live the most? It seems like you might want to live in NYC, but consider that all the schools are in very different areas of the city. How do you feel about living in Virginia or Maryland?