We stayed here for two nights while visiting Petra. We checked in around 9pm in the lovely lobby, but the front-desk staff had a really tough time finding my Expedia reservation, a complete drag. Dingy carpet, bathroom with terribly grey-colored tiles and designed to look like a castle or something like that, and musty smell. The hotel overall is tired, but there might be newer parts with better rooms, not sure. The beds were only a sheet and a blanket, but otherwise comfy enough and clean; we slept comfortably. The breakfast buffet was adequate with cheery and friendly staff. Room service food was alright, too, with the BIG exception that on both nights, the tray/cart was left outside the room all night even after we asked them to be taken away -- imagine how onions smelled in the morning.
My main disappointment with this place was the high price we paid for the level of room and comfort overall. Most other hotel options were sold out, and I do realize that Wadi Musa is pricey (second trip for me), but still.