If you need a cot or an extra bed, you can often add this as a special request during the booking process on the booking provider's website. 

If you've already made your booking, contact the hotel or your booking provider as soon as possible to request that a cot or extra bed be added to your booking. You can usually find their contact details in your booking confirmation or on their website. 

For accessibility requirements or other special requests, contact the hotel or booking provider directly as soon as possible after booking. 

Special requests, including cots, extra beds and accessibility requirements, are subject to availability and can't be guaranteed.