Integrate online booking form fields into your website

Add a date prompt before booking

The selection of travel dates can be individually customized via custom programming and transmitted as soon as the booking page loads. This way, the page opens with the relevant dates pre-selected. This doesn't offer any particular advantage to the traveler, as they still need to enter their desired dates manually. However, some hotels prefer to request the date before the booking page is displayed. You can program a form for this yourself, or have one programmed for you.

The necessary parameters for submitting the request are:

date_from & date_to 

both in the format YYYY-MM-DD

Example: For a request from August 1st to 3rd, 2026, a form would link to this URL:

https://booking.casona.com/de/booking/hotels/[YOUR HOTEL ID]/reservations/new?date_from=2026-08-01&date_to=2026-08-03

The travel dates can then be further modified on the booking page as desired.

Example

To display the category with the ID "Lt7C2ad3", a form would need to link to this URL:

https://booking.casona.com/de/booking/hotels/[YOUR HOTEL ID]/reservations/new?category_id=Lt7C2ad3

Voucher Code

To access the booking engine directly with a specific voucher, this parameter is required:

code

This code is the voucher code issued by the hotel.

Example

For a link using the voucher code "Summer Special", the target address for a hotel ID named "ABCDE" would look like this:

https://booking.casona.com/de/booking/hotels/ABCDE/reservations/new?code=Summer-Special

Please note that your code must not contain any spaces.