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At least for Germany (which you used in your examples), the hotel booking site hrs.de is a good source. You can change your language at the top right if it is not automatically detected. You can enter a longer period, and if a major event falls into this period, you'll get a warning. Unfortunately that won't work if no hotel is found at all for the whole period, but it can still be useful.

For example, if I entered Munich from August 1st to November 1st this year, I'll get the warning "Oktoberfest 9/17/16 - 10/2/16".

Or for Frankfurt (Main), same period, the warning lists "Ecostyle 8/27/16 - 8/30/16 and Automechanika 9/13/16 - 9/17/16".

Unfortunately this does not seem to include any other countries, as my tests for Paris and Geneva indicated.

At least for Germany (which you used in your examples), the hotel booking site hrs.de is a good source. You can change your language at the top right if it is not automatically detected. You can enter a longer period, and if a major event falls into this period, you'll get a warning. Unfortunately that won't work if no hotel is found at all for the whole period, but it can still be useful.

For example, if I entered Munich from August 1st to November 1st this year, I'll get the warning "Oktoberfest 9/17/16 - 10/2/16".

Or for Frankfurt (Main), same period, the warning lists "Ecostyle 8/27/16 - 8/30/16 and Automechanika 9/13/16 - 9/17/16".

At least for Germany (which you used in your examples), the hotel booking site hrs.de is a good source. You can change your language at the top right if it is not automatically detected. You can enter a longer period, and if a major event falls into this period, you'll get a warning. Unfortunately that won't work if no hotel is found at all for the whole period, but it can still be useful.

For example, if I entered Munich from August 1st to November 1st this year, I'll get the warning "Oktoberfest 9/17/16 - 10/2/16".

Or for Frankfurt (Main), same period, the warning lists "Ecostyle 8/27/16 - 8/30/16 and Automechanika 9/13/16 - 9/17/16".

Unfortunately this does not seem to include any other countries, as my tests for Paris and Geneva indicated.

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source | link

At least for Germany (which you used in your examples), the hotel booking site hrs.de is a good source. You can change your language at the top right if it is not automatically detected. You can enter a longer period, and if a major event falls into this period, you'll get a warning. Unfortunately that won't work if no hotel is found at all for the whole period, but it can still be useful.

For example, if I entered Munich from August 1st to November 1st this year, I'll get the warning "Oktoberfest 9/17/16 - 10/2/16".

Or for Frankfurt (Main), same period, the warning lists "Ecostyle 8/27/16 - 8/30/16 and Automechanika 9/13/16 - 9/17/16".