Originally Posted by
Dax1956
I booked T4 in the end. My only concern is getting from there to terminal 5 for the flight with kids and luggage.
There are always luggage carts just outside the front door to the hotel. Time your walk TO the hotel and you'll know more or less how much time you'll need to get to the terminal. The alternative is to take a cab, which will cost you around 10 pounds.