Fantastic place near Heathrow airport. I had a day to spend in London, and I was able to take the bus from Terminal 5 to Y&F's place, leave my bags and head back to spend the rest of the day in the city. The room was perfect for a nice cup of tea, shower and good night sleep before the next day's flight.
Note that the transportation will take some time - about 1 km walk to/from the bus station, and then perhaps the simplest way to connect to Piccadilly is to head back to Heathrow, so you'll be spending some time on that. However, for the price you pay this deal is awesome.