Spent the last two nights of our trip around England here to be near to the airport. The room was fantastic. We had a standard king room, room 3036. The rate was more than fair, 70 pounds one night...less than advertised anywhere. We called last minute!
The bed was one of the comfiest I've ever slept in. The hotel concierge helpfully pointed out the free shuttle buss to hatton cross station so we could get on the tube and enjoy our last day in London. He also gave us a tube map and some other getting around London advice.
A bit too far from central London to be a home base, but a great place to stay near the airport at the beginning or end of your trip.