No. To book a double room, a single hotel card is sufficient. All specified room categories (i.e. also multi-person and family rooms) can be booked with only one card. Accordingly, the prices listed on our portal are always per room and night (not per person).
Conversely: If you wish to book two rooms in the same period, you must present two hotel cards or two hotel card holders must each present one hotel card.
Please also note that the Hotelcard is personalized and therefore non-transferable. You must present the Hotelcard in physical or digital form together with your ID at check-in in order to benefit from the Hotelcard discount.