Amazing staff. Iconic hotel.
We stayed at the Carlyle for a friends wedding in July, as the happy couple were also staying their. 
Initially the hotel wasn't my first choice but having stayed there, it is now!
It's a very traditional hotel with the old world grandeur you expect from a 'Grand Dame'. We were staying in a Superior Room on the seventh floor. The room was very spacious with a walk-in wardrobe and the bed was a super King, so had loads of space! I read one review saying they had a problem with the aircon but it was absolutely fine when we were there on the back of the heat wave. 
The hotel is perfectly located by Central Park, which means you can grab a cab to Soho and shop 'till you drop and then retire back at the hotel. 
As luxurious as the hotel is, the staff really made the stay. From the housekeeper who has been working at the Carlyle for 25 years, to the gentlemen who operate the lifts who remembers who you are and will have a good chat and a joke with you. The concierge and bellman were also excellent and were very helpful. 
The only gripe I would have is sometimes the lifts took a while BUT that is not uncommon for any hotel. 
We will definitely be back to New York and we willbe staying at the Carlyle again.