|Gatliff Hostel, Ireland|
So though its niche a backpacker site, Hostelbookers is a top site to visit, even for those folks to ornery to share a room with 10 strangers.
Especially now, as the site is holding its yearly January sale. Despite the name, the sale covers travel through the end of March (though rooms must be booked by the end of this month).
Discounts are delightfully deep, cutting prices by as much as 50% in Prague, Florence and London. For a complete list of the properties on sale (both hotels and hostels), click on the link right above.