FROM THE AIRPORT
Take the underground (runs from 06:30 to 01:00) at the airport station and switch to the green line towards Baixa-Chiado. In the station follow the signs that say Largo do Chiado. After going up the last set of stairs, turn right and walk straight until you come to a big square with a statue in the middle: Largo Luís de Camões. Continue to walk across the left street of the square: Rua da Horta Sêca. We are there, on the left, at no.11.
You can also take the Aerobus 91 and get off at the last stop Cais-do-Sodré. As alternatives you also have the 44 Bus (runs from 05:05 until 24:00) or Bus 208 (runs from 23:30 until 04:30). In both cases, alight at Cais-do-Sodré. At Cais-do-Sodré, walk up the Rua do Alecrim until you reach Largo Camões. There turn left and go straight on until you get to ‘Rua da Horta Sêca’. We are there, on the left, at no.11.
FROM THE TRAIN STATIONS
(Santa Apolónia Station and Oriente Station) Both have underground stations so you can follow the same indications referred to above.