I suspect that Discover Qatar may be resurrected in the future, but obviously no one can say when. But even if the offer is not reinstated, you can usually pick up hotels at reasonable prices in Qatar in normal times, assuming the times are more normal than they are currently. However, I might hasten to add that there is not that much to see in Qatar and 3 days may be stretching things a little, unless you are happy to also relax in the Aircon.