The Priority Club Rewards scheme is a loyalty scheme for Holiday Inn, Holiday Inn Express, Crowne Plaza and a few other brands. You typically get ~ 1500 points for each stay in a hotel from the Holiday Inn group.
Normally it costs ~ 15000 or more points to get a free overnight stay in a hotel. However, they also have "PointsBreaks" where you can stay for a night for 5000 points. These are only available for a handful of hotels. They changed to a new set earlier today. You can book nights through to December 10th 2012.
There is limited availability for the rooms, so you need to be quick to get the popular dates and hotels.
In the UK, there is the Hotel Indigo in the middle of Newcastle. I have booked a couple of rooms there for the half term week. The bookings are flexible, so I can cancel by 4pm on the day and get a refund of the points. The equivalent flexible room-only rate would be £115 a night.
There are also the Holiday Inn Express hotels in Stevenage, Bedford, Colchester, Crewe and Liverpool (Hoylake). Those will include breakfast.
Elsewhere in Europe, you could stay here:
Finland: Holiday Inn Oulu
France: Holiday Inn Express Strasbourg - Sud
Germany: Hotel Indigo Berlin - Centre Hardenberg Str
Crowne Plaza Hotel Caserta
Holiday Inn Salerno - Cava De' Tirreni
Poland: Holiday Inn Bydgoszcz
Portugal: Holiday Inn Express Lisbon - Alfragide
Russia: Crowne Plaza Hotel St. Petersburg Airport
Holiday Inn Elche
Intercontinental La Torre Golf Resort Murcia
Turkey: Holiday Inn Express Istanbul - Ora
Ukraine: Holiday Inn Kiev