Just to add a more recent review: we stayed 4 nights at the Hilton Molino Stucky in Venice last week and loved it. At check-in they made a reference at the reservation being payed through Priceline but we felt no different treatment by the staff. Surely we got a no view room, but the bed was great, high quality decoration, very clean, reliable shutlle boat, overall a great hotel at a great price with Priceline NYOP!