Fantastic place! We were two couples, so this was perfect as this duplex is almost two independent apartments, with just a spiral staircase between the two spaces. Bigger than they looked in photographs, lovely high ceilings and light walls.
Perfect area to stay, to explore Alfama and Lisbon. The weather was perfect for us, not too hot or cold, so the duplex was fine, temperature-wise.
The windows can opened leaning back, so just the top is open, so after the first night where is was a little warm, we left them open and closed the shutters, which allowed a little cool air in. We stayed for 3 days, 2 nights and planned to take the Tram 28 to the top of Alfama and walk down, but we left this until the last day and when we took the tram, we realised we had already walked the whole area. :)
We rented electric bikes one day, a brilliant way to get around a large area of Lisbon. We had an amazing dinner in a restaurant called LIS8ON run by to young brothers (the S is backwards and an 8 instead of a B, he told me they overthought it! :) Highly recommended, both this AirBnB and the restaurant.