Priceline is serious about the "No Refund" policy. Given the warnings on the site when you bid, this should be no surprise. Don't bid if you're not willing to accept whatever you get. That generally means doing research *ahead* of time (on betterbidding.com and biddingfortravel.com) to see what bids are being accepted and where. I think the only option you have in this case, as has been pointed out above, is to show that the hotel is virtually unlivable because of the construction. Good luck, let us know what happens.