Next to Great America Amusement Park and San Francisco 49rs home stadium. Free parking.
Free fireworks, if your room faces the amusement park :-)
Close to Citrix, TCS, CA Technologies etc offices. I like running and found a
Rooms were ok (I stayed in HHonors floor), free WiFi in this floor. Breakfast was not very good, ok, but nothing special. I liked the fresh berries though.
Pool area was quite small, but ok for a Morning swim. as The Gym was a bit small, but as I was the only person there I did not mind. Gym was open 24 h so that was very positive.
I had a negative experience with the front desk the day I was leaving: I did ask the front desk person to contact the next Hilton I was moving for the following night. He said that I can do it myself (?). I did call them myself, but I was surprised that front desk had the clear messsage that they would not contact another Hilton hotel to help me on my question with SF Hilton Union square..