Also, get a liquor license. You'll thank me later.
Or the very least, a way of offering caffinated beverages (coffee, soda, etc) and food (snacks).
This is amongst comfortable seating and table seating areas with power amenities and most importantly network bandwidth to the outside or if not, a high bandwidth intranet.
But I would also agree with:
Like bobberfett said you are too focused on the details. What is your actual idea?
Instead of asking here, draw up a business plan and start shopping for a lender.
One needs to account for the various timely periods of expenditures, and income generated.
Expenditures:
Utility, Rent, Maintenance, Equipment, Manhours, Advertisement of business, and possibly incoming and logistics of food/drink, licenses, and storage and preparation + handling labor. This also includes the business owner's own support means, as this would most likely be a full time job either in managing or working in the location.
Income:
Fees, percentage of take from selling of consumables, rentals... anything to offset the expenditures to remain viable.
Scope out your intended project timeline, what you are expected to gain in traffic in expected audience, generated income, your upfront expenses needed (if you intend to take a loan) and a plan to make back the loan and the expenditures you will take up.
Being in New York City, it maybe advantageous but finding and establishing a location is still important - which plays a part in if it balances out with your expenditures in rent and income traffic.
Of course, I am not an expert on these things - I just gave it from a typical project perspective.
Edit:
And Insurance costs... don't forget that amongst your expenditures.
