Here and there by bus

Easy and convenient... the Bus and the Metro

Right across the street you have Bus:

Number 3: ex: Colegio Militar

http://www.carris.pt/pt/autocarro/3/ascendente/

Number 17: ex. Praça do Chile

http://www.carris.pt/pt/autocarro/17/descendente/

Number 701: ex. Campo Grande

http://www.carris.pt/pt/autocarro/701/ascendente/

In just 2 bus stops or a short 12 minutes walk (by google maps) you have the metro directly to city centre.