no view from a lack of hotel window

I travelled down to Heathrow last night, to the hotel at T3, ready for my early flight to Japan today for the ALife conference.  I went to take a photo from the window, as usual.  No window!  I looked at the emergency exit floor map. No outside wall!  Okay.  Perfectly comfortable room, nonetheless.

That wall covering over the bed is not a blind: there is no window.