Tap water can be drunk

Yes!

I stayed at there Thursday in New York and we really enjoyed it.

I was asking the hotel service about this explicitly and the answer was YES. I was drinking tap water there for a few days and it was completely fine.

It's drinkable like in the rest of Manhattan... In fact, if you've just arrived, you won't be long in noticing that water is always served free and in a jug in any restaurant...

No

I estimate that yes, water is also very cheap and they sell it in any pharmacy, on the corner, for example