Scam alert

Beware of unauthorized or fraudulent hotel and registration booking agencies.

  • INTERPLAN AG is the official housing bureau for the EHA2024 Hybrid Congress. EHA cannot validate hotel reservations via sources other than those presented by Interplan AG.
  • After conducting careful research and dedicated negotiation, Interplan AG works on your behalf to provide the best hotel rates and keep the meeting affordable in Madrid.
  • To receive the best service and pricing, please make sure to contact:

If you are contacted by any other company or agency offering housing and registration for the EHA2024 Hybrid Congress in Madrid, please note that these companies are not authorized to represent the EHA in any way, nor do they have access to the officially contracted EHA2024 Hybrid Congress room blocks or rates.

If you are contacted by any such agency or have any questions regarding their legitimacy, please don’t hesitate to contact us at or

How does hotel fraud work?

These groups promote attractive deals with local accommodation providers, but once payment has been received, the company disappears and can no longer be contacted by phone or email. Once the attendee contacts the hotel directly about their room, they realize the hotel has no record of them or their stay. Not only is their money gone, they must then scramble to find last-minute accommodation, which is rarely closely-located to the venue.