Sergio was very nice and helpful, but the price I paid is way too high for the experience I got. A shared room on a 4th floor apartment, with all doors closed, which means almost no light. Not a single couch to sit on, neither a reasonably comfortable chair. Just the bed in the room, a shared table and the kitchen.
As a reference, I paid slightly more per night on a dream place at the very center of the city, during a weekend, and it changed the depressing view I got from Lisbon.