The Ace Hotel- for kids only
My husband and I stayed at the Ace for the Tribeca FF, it is conveniently located and in quiet hours seems like a lovely hotel. 
Don't get fooled. The lobby turns into a nightclub at night. You need to push through a crowd and present the doorman your room key in order to enter the lobby at night. Once inside, the music is so loud you can't hear a thing.
The rooms are tiny and the walls are paper thin. We stayed on the 12th floor. On our last night, a Saturday night, at midnight I couldn't take the noise any more so I called the front desk and they politely told me, "the reason for the noise mam is there is a room party down the hall." There was no urgency to break up the party, it is just part of the hotel's atmosphere. 
Luckily by 1 am, when the party got bigger, they allowed me to switch rooms to a quieter room on a lower floor. Nevertheless, who wants to pack up their belongings at 1 am on a Saturday?!
Bottom line, if you're coming to NYC to rage and party all night, this is the perfect place for you. If you're looking for a place to get a way from the noise and chaos, please do not stay here.
And it is not cheap either!!!