So, how nice is the Arrivals Lounge? I've got a night flight this month, arriving at LHR at 6:45 on a Sunday and likely our hotel won't be ready until 11 am, or even 2 pm. Should we take a break in the Lounge for showers etc before heading into London? Where is the Lounge in relation to the normal exit point from Customs (I need to arrange for mini-cab pick-up)?