I requested, at the front desk, to combine the back-to-back stays, to avoid checking out, then back in. They did, and it' now shows as 1 4-night stay, at £59 per night (£236 total - more than I am spending). Rate is still 2-for-1 (2 night minimum stay required. Special Savings! Reservations are final and require full prepayment for the entire stay. Credit card is charged between time of booking and day of arrival. No refunds if cancelled or changed.) surprisingly enough...

So now we'll see how much it likes the overlapping stays. I'll also update on how the stay is posted to my account.

As an aside, I called the front desk just now to confirm that they won't be taking anything else off my credit card, since the stay is supposed to be prepaid, and is paid up. They didn't understand until I told them the chain of events, they said that I shouldn't be charged more, but that I should confirm on checkout.

Anyone else here (UK) affected by the snow?