Overpriced - missing on the details - horrible food
I just got back from a conference at this hotel. My organization stayed here a few years ago and had to go back for contractual reasons.
First - the hotel is overpriced. Period. Our conference rate was quite high for "June Gloom" season. 
I arrived for check-in at 3:30 (3pm time) and was told that there was no room available for me. After flying cross-country, I told them that was unacceptable and she should look harder - and voila! A room appeared.
Upon getting up to my room, I opened the shades and what did I see? A huge cargo ship out the window and a dirty pair of socks on the floor. Apparently they don't vacuum much as I also found the little plastic price tag holder from the last guest's new clothing on the floor as well.
I hated the bed - it was way too soft. Hilton - take a page from Hyatt or Westin - much better beds.
Both phones in my room didn't work. Actually, the speakerphone on the desk phone worked and that's how I called downstairs to ask them to fix them. Took 2 requests, but the technician was incredibly nice and polite.
What an amazing shower. This was one of the best showers (in terms of pressure) ever. It would have been even better if they took the dirty washcloths out of the shower when they cleaned up.
The gym was pretty well appointed - and surprisingly, they don't charge extra. They even gave me a bottle of water.
But speaking of charging extra - WiFi is ridiculous. I called the front desk to ask them what the speed was that they were charging either $13.95 or $19.95 a day for. The answer I got was, humorously, "the lower price is good for e-mail and general web browsing and the higher price is if you want to watch videos." When I clarified and asked what speeds I was told that they don't have that info.
They were nice enough to transfer me to tech support (that outsourced company thing) and the tech guy, who was nice enough, told me that he was not allowed for company policy reasons to tell me that information. When I reminded him I could buy it and run a speed test, he told me that it was my choice.
How can people sell things without having the information? I'd rather stay at a limited service hotel where it's included than get nickle-and-dimed with this approach. Give the front desk the speeds - internet is like air to a business traveler and we know what speeds our VPNs require.
Way too many TV channels were still analog on the big HDTV's. Come on, it's 2012 there's no reason for this.
However, the worst part of the stay was the conference food. Without going into details, I've been to at least a hundred conferences over the years and this was the worst food ever. One day I only had sorbet for lunch as the chicken was inedible. The person who asked for the vegetarian option had to wait 25 minutes while they killed and cooked the veggies. 
Overall, this hotel isn't worth the extra expense and I would avoid it if your conference isn't there. This Hilton doesn't make me want to ditch my other brands to choose them in the future.