I can definetely recommend a stay at Duque's Villa.
Cintia is a great host, very kind and helpful: She answered all our questions and even helped us with the Covid-Test and the toll for our rental car.
The apartment was clean, well furnished as in the pictures and also our little space outside and the rest of the garden were really nice for sitting outside for breakfast or in the evening. From the garden the river Tejo and a part of the harbour can be seen. The main square of the city Lisbon is only 25 minutes by bus, walking might be too exhausting;)
We had four days of sightseeing through the city and he several city quarters and three days at the beaches in the north and in the south of Lisbon. Duque's Villa is a great place for your stay in Lisbon, you will not regrer it!