Hereunder is the address and the link to get there:

Rua São Pedro Mártir N° 49, 3° ét et 4è ét

Take the red line metro from the airport to SAO SEBASTIAO, make a change at the ALAMEDA station to the green line towards CAIS DO SODRE (Duration 40 ')

Get off at MARTIN MONIZ and then follow the map:

https://goo.gl/maps/LNIRp

You can also take a taxi for about € 15 and Term 20 '