The apartment is in a great position in Bairro Alto, walking distance to both the center of Lisbon and some brilliant bars and restaurants in the area. The apartment can be a little noisy at night as it is above a bar, but you'd struggle to find anywhere quiet in Bairro Alto anyway as it's so lively.
The apartment was very clean and spacious. Catia was very helpful and friendly and I would definitely look to stay here next time I was in Lisbon.