The roof the roof the roof... and if you are lucky with your room
amazing roof terrace bar with a wonderful view on downtown LA! great coctails, great parties there! and the swimminpool...
as to the rooms: i personally had a very nice room (414), designer lay out, panorama window, huge bath, some funny elements (like the transperent curtains separating the bathroom from the room, and no door - so no privacy... I saw some other rooms in this hotel, which were quite depressing. It's like the comfort and cozyness (yes, that's what we want in hotels - how surprising) - were sacrifised to impress you with the feeling you stay in the modern art gallery...
Still worth while to try - if you are bored by Marriots and Hiltons...