This is a repost of a comment I had on another topic that I thought might be helpful here. The Omni Severin (skywalk to ICC) has some rooms available at 429 a night. Their website normally says they require a non-refundable deposit of the full amount but:Good news everyone! I was able to use a coupon code at the Omni Severin website to purchase a 5 night stay without a deposit!I was trying to see if there was a way to reduce the overall cost of their cheapest room, and I found this coupon code: TRIPADV 
It added a "Trip Advisor" option instead of just the "Special Event Advance Purchase". The price didn't go down like the retailmenot account promised, but it removed the requirement to make a deposit. It even allows me to cancel apparently without a fee if I do it before August.