Glad to see this offer back. I have a 15 hour day time layover in January that I'll look to book a room for.
Ideally would want a gym, a pool (bonus if outside) and if there is any with a history of 'early' check in that would be useful as I'd likely want some sleep to adjust to Australia time before next flight.
List of hotels: Intercontinental The City, Souq Waqif, Fraser Suites, Holiday Inn Business Park, Marriott Marquis, Warwick, Westin, Radisson Blu, Holiday Villa.