If you're alone, on a budget, and you still want a place for one night to stay in the center of Lisboa, consider this room. Like it says in the listing, the room has no window or other ventilation. The bed itself is not the best. However, the staff is friendly and eager to help and the location is great (close to the Rossio station of the Verde metro line). I don't know how noisy the room is during the summer, but it was rather quiet early December, probably since it's on the top floor.