Very clean house. The location is perfect; it's very close to one of the biggest metrostations and in one of the nicest streets of Lisbon (tourists are constantly taking pictures of the view in the street!). The street is busy at nighttime and there's a pub on the other side of the street, which may cause a bit of noise but nothing too annoying. We stayed as a duo but staying as 3-4 persons is also possible. However, due to it not being big I wouldn't recommend staying with more than 3 unless you don't mind seeing eachother constantly (except in the bathroom) and don't mind the amount of space.