I was looking for a clean, quiet and cheap place. I spent most of my time visiting Lisbon and nearby places. I never met Luis but Teresa, she gave me the keys and talk to her about nearby restaurants, she was kind to give me soap to watch my clothes before I left Lisbon.
The apartment was occupied by students, there are four rooms (including the one I used), I met all the young housemates whenever I went to the bathroom or when I left the bathroom, I only used the bathroom and the washing machine once, but you can use the kitchen and the refrigerator. The housemates were very respectful I never heard loud noises at night.
Public transportation is about 300 or 400 meters to take the bus or the tram to go to the historic center (Praça do Comércio or Rua Augusta)