We stayed in an Air BnB also, in our case down near the Time Out market which was a great area.

Salvo engano Baixa Pombalina seria o nome o bairro

Are you asking about an ATM or do you want to exchange one currency for another? ATMs are all over the area, even in the Metro stations. You can find banks, who probably exchange currencies, down the Ave. near Rossio and the train station. You will have no problem with access to your money in Lisboa.

deve depender da loja mas em geral as 19h

there is a lot of choice of restaurants in this street.

No lo sé con certeza, pero no creo que abran porque en Portugal celebran mucho las fiestas de Navidad.

Na avenida não tem.

I'm sorry. I do not know.

Hi Choot, You can take the underground at the airport (red line) and goes until the end then take the blue line ( at S Sebastião station) just 2 stations and leaves the underground at Marquês de Pombal Station. That's where begins the Avenue ! It wil cost you around 5-6€ . But you can buy a one day ticket or for the time you intend to vidit Lisbon.A taxi would cost around 10-15 € . At Baixa you can find lockers at Praça da Figueira underground station or at the Tourism Office (behind th D. MARIA Theater). Have fun in zlisbon