Just this afternoon I got a room for my wife 'n' I at the Mariott Courtyard Downtown, which is directly connected to the mall, which itself connects to the convention center.
I couldn't get it through the housing authority, I had to contact Mariott on my own, but I recommend it as a hotel. It's very nice, clean, good staff, and you never have to walk outside (i.e. break a sweat) if you don't want to.
They even have rooms with spas still available, if you want one....