I stayed here in April and got upgraded to a corner room. I saw some of the "regular rooms" when housekeeping was cleaning and it looked like the difference is that the corner rooms have a sofa with pull-out bed and a little extra room to walk around. The corner room also had floor-to-ceiling windows on one side and the regular room just had a crescent shaped window (you will see what I am talking about when you see the outside of the hotel). The bathroom was very large too with a separate stand-up shower and soaking tub but I didn't see bathrooms in the other rooms so I can't compare those.

Overall it was a great hotel - especially since the concierge lounge was open for breakfast on weekends until 11 (it was on a temporary basis - not sure if this is still the case).