Hostelworld payments

I just booked using HostelWorld for the first time, but only 8€ left my bank account. On the confirmation email, it says that the rest is payed to the property:

" Property will charge the outstanding amount at any time after the booking has been made. If your card is invalid, property will contact you for new card details. If you don't provide those details, property is entitled to cancel your reservation."

How long do they usually take to charge the amount?