Luis and Justus' place is done up very tastefully and is well-equipped with everything you would need. Luis was there to show us around the house and the neighbourhood when we reached and left us with very many useful pointers. The flat is a short walk away from the nearest metro station and is a short ride away from most of the tourist spots. I'd love to be able to go back and explore Lisbon some more and I wouldn't think twice about where I'd want to stay!