Very happy, nearly identical to the Conrad & much cheaper!
We stayed here to attend a wedding at the Conrad down the street, so I spent a fair amount of time both at this Hilton and the "flagship" Conrad, and I have to say, there is no discernable difference in quality, luxury or amenities between the Hilton and Conrad. The Hilton Hotel & Suites is extremely nice with a charming lobby, friendly staff, and even nice perks the Conrad was lacking like fruit infused water in the lobby (although the Hilton didn't have a Picasso exhibit in the lobby like the Conrad did, but I digress). 
We got upgraded to a Junior Suite which was extremely nice of the staff to do, and our room was massive, probably as big as my condo back home. The bed was super comfy, the room nice and quiet, the blackout curtains are always appreciated, and it was also nice to have a separate living room, mini fridge, etc. 
Overall a great value, great location, and on-par with Conrad and other luxury hotels in the area. I'd definitely stay here again...