Very comfortable rooms in new hotel in vicinity of Heathrow. Good sound-proofing, great shower, luxury pillows, good air-conditioning, big TV, iron etc. Access by car straight off A4 or by tube go to Osterley, cross the main road bear right to walk or catch a bus (two stops- use contact less) - easy.
Can then get straight back into Hammersmith next day if needed.
Taxi to terminal 4 is pricey.
Lifts are behind closed doors so no noise. less