This must be the poorest customer service and overrated hotel in Los Angeles.
The hotel as much as it is a JW, is simply a Marriott. Just picture any Marriott in the world and that is what you have, nothing special, a little bit of extra space but that is it.
The shower had no pressure but must vary as other people raved about it. Mine was close to zero water!
Definitely NOT A GOOD HOTEL FOR BUSINESS PEOPLE. Forget about shipping anything to the concierge because it is an adventure to recover your package. The concierge was very rude and I have never complaint about customer service, but this hotel definitely deserves it. 
When you call for a copy of a receipt or whatever issue, you will be "disconnected". If you ask for help, nobody will. If they do, they will transfer you to an office where nobody can help you or nobody picks up the phone.
the restaurant is average except for the prices, which are high.
I would not recommend anybody to stay at this hotel. 
Except for the location if you are going to the convention center, it is not worth the money or the arrogance.