We are a family of 4 (kids 6 and 10) and spent here 6 days in October. We loved the location with great local shops and places to eat nearby, we enjoyed the area of Belem which has tons to offer for both adults and kids. The transport links are great, the house is a beautifully renovated period building with tiles. The place is big, comfy has all what you need. I would come back with pleasure.
ps: The Lisbon Earthquake Experience center is just 4 minutes walk from here which I would recommend to everyone who comes here - need to book ahead.