Very good flat : very clean and calm, 20 minutes with a taxi from the aeroport (around 10-15 euros with 4 people and luggage). As it is in a quiet zone, we need tram ot taxi to reach most of the places, but it is not a problem because it is easy and cheap (5-7 euros max to go to Belem with 4 people). A nice gift at our arrival. No key, there is a code to enter which is easy when the plane is late in the evening.