From the airport you can take a táxi to the apartment, it takes 10 minutes and it´s around 15 euros.
To avoid long queus go to the departures and take the táxi there.
If you´re more than 4 persons we can provide you a larger táxi, you only have to tell us, and it´s around 30 euros and the driver ( Sr. António) will wait for you at the airport.
You can also take a Metro/ Subway from airoport with destination in "Baixa -Chiado" from there you need cross the down street in direction to St. George Castle and take two elevators , the first is "ELEVADOR DO CASTELO" and the 2nd "ELEVADOR DO CHÃO DO LOUREIRO" and you will be at "COSTA DO CASTELO"