We couldn't have wished for a better host than Sam. I strongly suggest him and his rentals.
Sam is easygoing, cool and full of information and inspiration. He is really caring and helpful - you will have a great time if you stay at his place. The small house has a bedroom, private bathroom and a rooftop terrace you can use anytime, everything is clean and tidy. The bed is comfortable and the room is cold enough for a great nap or sleep. You also can use the livingroom and the kitchen anytime. The location is great and there are several good cafes and restaurants around. Whenever I come back to Lisbon I will try to rent Sam's place, hope there will be free slots :) Oh, and ask him about his other rentals, like his cool van!