Great stay. The Marina staff are friendly, gracious and welcoming, and having a 24/7 office available is a comforting amenity. The houseboat was clean, well-equipped and comfortable. It's a great location right by the aquarium, the cable cars and a number of excellent restaurants. The boat is moored right by the harbor entrance, so there are plenty of passers-by, by curtains afford privacy. For those unsure about booking a houseboat: rest assured that it has all the amenities that you'd get in a land house, and the boat is quite stable—you don't need to fear seasickness. The one annoyance is that water processing is a bit noisy (running, draining out), but this didn't detract from our experience. Highly recommended for a low-cost stay in an overlooked corner of Lisbon!