We stayed at the Curio (really nice, great location), and the Hilton Nordica. Curio had a deal going at the time (just opened) with a sampler dinner free for Diamond guests. The breakfast was fantastic at Curio.
Hilton had the awesome spa, with those massages in hot tub(!) and a very nice view lounge with small snacks and drinks. The rooms at Hilton were fine but pretty stark though.