The listing is exactly what it says - it's actually nicer than the pictures! Rita was welcoming and very accommodating. In advance of our visit, we were provided with detailed instructions of how to reach the flat, which was really helpful (it's about 20 mins from the airport by metro, and Avenida metro station is close to the flat). We arrived earlier than the check in time and Rita kindly let us leave our bags in her own apartment (on the same road) as well as letting us check in earlier than the stated time.
The place was spacious for 3 of us, was very clean and had everything we needed from clean towels to cooking essentials. Location was great - close to a metro station but also areas like Barrio Alto were walking distance.
The flat also contained useful information on things to see in Lisbon as well as how to get there and recommendations for restaurants - which was really useful. Definately would recommend to others!

The only downside (minor) is that the stairs leading up to the second floor flat were quite steep and narrow so you need to be careful if wearing heels or carrying a large suitcase.