Upon reading all the positive reviews about this stay, my partner and I were excited to relax and enjoy our time in Lisbon. Unfortunately, we had an overall negative experience with this stay. The major problems we faced:
The neighbor upstairs must be an elephant. All throughout the night they are pounding over our heads. Boom boom boom boom they walk back and forth the tiny apartment, making for a very difficult sleep.
The air conditioning unit has some form of pump inside the wall that makes a very loud jarring noise intermittently every minute or so often. This noise can be heard throughout the entire flat (it isn't very big to begin with), so it is very difficult to sleep with the aircon on. Since there are restaurants just below in the street, you cannot sleep with the windows open as it is too loud. So either you sleep in a stuffy sauna, or you turn the aircon and are subject to being awoken every few minutes by the noise of the aircon.
Overall, the flat just doesn't feel very well cared for. The toilet doesn't flush easily. You have to fight it to release so it will stop running. The water kettle was filthy. The kitchen was dirty and uninviting to cook (also no basics like salt, etc.).
It is evident this flat was built as a business for Airbnb. It is very tight and does not feel very homey or inviting at all.
We really wanted to like the apartment and are not ones to easily complain, but due to the noise of neighbor + aircon, we suffered for four nights in a row with very little sleep (about two hours max each night). Because of this, I cannot recommend this flat for a holiday stay.