Ana’s apartment is very well located. You can easily go anywhere central and it is super close to the Sao Jorge Castle. The place is nicely decorated and the room is bright. The view on the city is great. The kitchen is well equipped and functional. We stayed one month there and we felt pretty much at home. However, as the flat is at the last floor, it may not be suited for tall people as my boyfriend kept on bumping his head on the ceiling or on the Velux windows. Also, there are a lot of stairs to reach the apartment (129 stairs to be precise!) so it will be perfect for your daily exercise but maybe not the greatest when you have a lot of baggage.
The kettle was leaking so we asked Ana if we could replace it, the communication was a little confusing because of the language barrier but Ana was nice and replaced it in the end. Sometimes, there was a strong sewer smell which is not very pleasant but not unbearable.
Overall, we liked our stay but not the best if you are tall!