My boyfriend and I stayed in Zaida's place for a full week in April.
Despite the fact our flight arrived almost at midnight we were kindly welcomed and the check-in went super smoothly.
The thing we loved the most is the location of the apartment - literally in the heart of Alfama - unique atmosphere and great vibe of the surrounding - the neighborhood of the Fado. We were able to easily explore Lisbon from the place we stayed.
The apartment is very authentic, fresh and renovated, with a very cozy bedroom upstairs. It has everything you need.
The host was very responsive and she even let us check out in the evening as our flight was late.
I would recommend Zaida's place to anyone who wants to really feel Lisbon! :)