My 84 year-old mother and I are taking a flight with an overnight layover at Heathrow, and I want to get a room at whatever hotel will make the layover easiest for her. We will arrive in Heathrow Terminal 4 late (for her) one night, and leave the next morning -- also from Terminal 4. It looks like the Hilton is my best choice, but I want to be sure I'm not missing anything. I'm familiar with the Hilton at the Rome airport, which is walking distance (with the help of moving sidewalks) from the airport. Is this one similar?