Youth Hostels can be used by everyone. Nevertheless no child under 16 years old should remain alone in a Dorm room, unless parents take full responsibility for that.
From 12 years old it is compulsory for the holder of the booking to show one of the above.
You can get the Hostelling Membership Card at 12 years old. It gives you access to all Youth Hostels belonging to Rede Nacional de Turismo Juvenil in Portugal and all over the world as well as several discounts.
Get to know more in here: http://pousadasjuventude.pt/pt/cartpousadas/
Sheets and bed linen are always included in Double-rooms. Dormitories only include bed linen, folded on the bed. So you must bring your own towels.
Yes, breakfast is included in the price.
Both gives you access to Youth Hostels as well as benefits and discounts.
In Youth Hostels only Doubles are coed. In Dormitories genders are split: Female wing and Male wing.
This happens for two reasons: because you did “Pagamento de serviços” instead of “Pagamento de compras”; or when you try to make the payment online using the Caixa Geral de Depositos bank card, which only allows you to do “Pagamento de compras” on the ATM.
Payment shall always be done previously, according the booking confirmation date.