I am looking for a decent hotel close to heathrow terminal 5 for my 8 hr layover in London end of January 2015. Budget is about £150 but I also have Marriott miles. Any ideas? Will need a taxi as I have to claim my luggage and check it back in for second leg of my trip, can't use tube to travel to hotel so hotel has to be close to airport. Any advice is very much appreciated.