Nuno's apartment was perfect for our 5 day stay in Lisbon. We agree with most reviews in regards of the noise at night - The apartment is located on a highly transited and touristy street, so you will get noise from street artists and restaurants. However, most noise stops at around 11:30pm.
Rooms are spacious, internet is fast, TV has plenty of content, fully equipped kitchen, and Nuno was always available for questions.
Thanks!