I was nervous about booking this hotel. Many of the reviews here indicated that noise was an issue and when I read that the station is "5mins away" always makes me wonder by what mode of transport.
Firstly the hotel is spotless and the staff, were fantastic. The W is, at least in my opinion, not focused on families, but the staff were great with kids. The PATH station is only 5 mins away by walking, unless you stop at Starbucks though you don't need to as there is complementary coffee/tea available to go or if you ask they will bring you a coffee maker to your room.
The noise, yes there is noise, but I dont think it was worse than other hotels. The management seemed pretty pro active. At the weekend there was a large sign in the lobby indicating that guests should call & email management if the noise is excessive (they indicate excessive noise includes groups of people in rooms and no party policy in suites). The rooms all have good views of Manhattan, just as advertised.
All in we really enjoyed this hotel, though generally when you have kids a pool is good.
You are close to lots of local restaurants and bars so you don't need to eat at the hotel. Which is great for breakfast when there are lots of you.
What could be improved ? The internet sucks. It is like being is a timewarp, and going back to dial up. It is so slow, that if I was here on business, I would be unable to work. Also I thought parking was shade expensive. I expect $35 in Manhattan, but I thought that being here for 4+ days I could have caught a break, with a reduced fee ... still I understand that you do get in/out privileges.
On the whole, spotless hotel, sweat the details, great staff, but please sort out your internet so I can stay when I come on business.