We loved the apartment so much. It was really comfortable, modern and clean and the pool area was lovely too. The communication from the host beforehand was fantastic and getting into the building/apartment when we arrived late at night was so easy and straightforward.
The location was really close to the airport (only 6 euros in an Uber) and a 5 min walk from the nearest subway station. (The public transport in Lisbon was awesome! We travelled all over from Lisbon to beautiful Sintra and Estoril beach and Cascais and it was so cheap and easy.)
The only reason I've give it 4 stars instead of 5 is because our apartment was quite noisy. It was on the ground floor at the front of the building so we were kept awake by the noise of the street (it was far too hot to keep the windows closed) and the main door buzzer too. We ended up having to buy earplugs so we could sleep. I would imagine if you're higher up or facing the back of the building, it would be absolutely fine, we were just unlucky with this one.
Other than that, we loved it and would highly recommend it if stayin in one of the other apartments in this building.