Gorgeous apartment, very clean and a lovely balcony. The owners could not do enough to help, including arranging transport to and from the airport. The aeroplanes already mentioned are very frequent but not of particular concern if you plan to be spending your days in Lisbon as opposed to the apartment. It is a 90 minute walk into Lisbon centre or 15 minutes to the metro followed by a 15 minute train journey (very easy to do and very cheap E1.50 per journey. If you have not been to Lisbon before and you love a 'walking city' with outstanding views, you must go! We loved it and would thoroughly recommend this apartment for great value.