Works til mid April, but here are some T&Cs:

Rate Description: Websaver - Full pre-payment required upon booking
• Cancellation Policy: We understand that your travel plans may change. That's why priceline doesn't charge you a change or cancel fee. For the room type you've selected, you can cancel your reservation up until noon on Monday, April 6th (local hotel time), however the hotel requires payment for the first night's stay. You will be charged for the first night's stay including taxes and fees. Any remaining amount will be refunded to you. Refunds or cancellations are not available after noon local hotel time on Monday, April 6th.
• Guarantee Policy: Reservation is guaranteed for arrival on the confirmed check-in date only. If you don't check-in to the hotel on the first day of your reservation and you do not alert the hotel in advance, the remaining portion of your reservation will be canceled and you will not be entitled to a refund.
• Your credit card is charged the total cost above at time of purchase. Prices and room availability are not guaranteed until full payment is received