It is the Renaissance at Heathrow.

Yes, I looked through the 2013 thread that you referred to - it is, of course, clear as mud.

I would like to write the hotel and ask what they mean, but I cannot find an e-mail address for the hotel anywhere on their website. Does anyone have the e-mail address perhaps? Why are hotels so shy to put up their e-mail addresses; seems to me as being reason enough to look elsewhere.