With my sister,we stayed only one night, our last night in Portugal.
The plus of this place, very close to the airport and 5minutes walk to the metro. The room was clean but the sheets wasn't comfortable to sleep.
The down side, the area is very isolated and far from Lisbon, 20 minutes by metro. We didn't know if they had cats because we could smell it but it wasn't uncomfortable. The host don't live in the appartment and we couldn't tell if the other tenants were tourists in Airbnb or people renting per month. Anyway, if you need just a night to stay close to the airport and don't mind about the area or being far to the city Lisbon, this place will fit the purpose.
Both hosts don't speak english. We had to speak in Spanish in order to be able to communicate with them