Orbitz - 15% off Selected Hotels ($USD) Book by April 23, 2017, Travel by December 31 2017

Rehash of the ongoing 15% off Orbitz deals. Pricing is quite competitive, and cheaper than most other hotel booking sites. Plus you get 3% Orbuck credits booking online or 5% Orbuck credits through their app. (Orbuck is effectively credit to spend on your next booking)
Downside is it does not have as many hotels on their site as Agoda.com or booking.com depending on which part of the world you're travelling to.

Pay with Citibank Debit, 28 Degrees, or BankWest Zero to avoid currency conversion fee.
Most hotels offer free cancellation up to a week before. (ymmv)

Terms & Conditions
Offers valid at participating hotels only and are subject to availability. Offers vary by property. Minimum night stay may be required, and varies by property. Rules, restrictions, and black out dates may apply. See property pages for further details.

TRAVELBUG
Subject to the restrictions set out in these terms and conditions, the 15% promotion code may be applied to a qualifying stand-alone hotel (not a hotel booking in combination with any other product such as flight + hotel, or flight +hotel + car) booked online with orbitz.com between April 10, 2017 12:01AM CT and April 23, 2017 11:59PM CT, for 1 or more nights for travel between April 10, 2017, and December 31, 2017. Qualifying bookings instantly receive 15% off at check-out through the use of the promotion code. Customers are limited to two redemptions of this promotion code and up to a maximum savings of $200 per booking. After those two bookings, this promo code will not be able to be used again, even if one or more of those bookings is cancelled. Exclusions may apply and most major hotel chains are excluded. The promotion code cannot be redeemed against taxes, supplier fees, cancellation or change fees/penalties, administrative fees or other miscellaneous charges, which are the sole responsibility of the customer. Discounts are not redeemable for cash for any reason. Promotion codes are non-transferable, not for resale, and cannot be combined with other offers or used for any booking previously made. Any attempt at fraud will be prosecuted to the fullest extent of the law. Void where prohibited, taxed or restricted by law. Orbitz reserves the right to change or limit the promotion in its sole discretion. Usual booking terms and conditions apply (see https://www.orbitz.com/p/info-other/legal.htm) and all bookings are subject to availability.