It is an airport hotel so you are likely here beca...

It is an airport hotel so you are likely here because of a flight cancellation or to catch an early flight. Unlike most of the other options at Heathrow, you can actually walk to to Terminal 4 via a covered walkway and get to the other terminals using a free train service.
That alone makes it one of the best options at Heathrow. Rooms are clean and service good, but it is still an airport hotel which is the reason it does not get 5 stars. If you can, take Heathrow Express into London and enjoy the city. If you don t have the time for that and want to stay at the airport, this is one of the best options.