Great overall stay
I enjoyed staying at the Hilton Time Square, they had everything I needed and more.
Great service from the whole team from front desk to concierge, and from housekeeping to bellmen. The gym was a surprise, as it was better than we had all anticipated.
As for the rooms, no complaints from me. Very clean, comfortable beds and bathrooms were a comfortable size. Parking was valet only, and it took quite long for our car to arrive but we understand that it's a busy city and for the driver to travel 3 blocks (which is where the parking garage is located) may require patience. 
Being in Time Square you would expect it to be noisy when it's time to sleep but the hotel was amazingly quiet and you forgot what surrounded you outside the second you got to your room. 
Location wise this is the best hotel I've ever stayed at in NYC.