We stayed for 4 nights with our 6 year old in this apartment and were quite comfortable.
The location is great, close to all the sights and attractions in the heart of Lisbon.
We were welcomed by Rita, she was friendly and thorough in showing us around the apartment and gave us lots of information / suggestions about the neighborhood.
The beds were comfortable, but the pillows could use an upgrade.
The kitchen was well equipped, and we enjoyed cooking our daily breakfasts there.
Noise wasn't an issue, as the windows are very thick and when closed you can barely hear the street.