We had a great experience with the house and its location. The owner was a superb host, being flexible and available for our late late check-in and even bringing snacks to appease our oldest son (3y) trantrum. He gave us some recommendations of what to see and do around Lisbon.
The location is great for families since we got to walk through Parque das Nações, visit the Pavilhão do Conhecimento and enjoy the good restaurants of the area.
Definitely a recommendation from myself for families that want a quiet place with good accessibility to Lisbon.