Looking at a 1 night stay at LHR and came across a 'secret' hotel on travelocity described as: Comfortable, connected hotel near Heathrow Airport - 4* - Heathrow Airport.

At first I wondered if this would be the Hilton but perhaps by 'connected' they mean that it is easily accessible on the Heathrow Connect train, or a shuttle perhaps ?

Any thoughts ?

There are a few others available with tag lines:
Stay minutes from the terminal at great prices! - 4* - Heathrow Airport.

Luxury heathrow htl with Spa,close to airport - 4* - Heathrow Airport