We had a wonderful stay at António's place. The apartment is great - and can easily fit a family of 5 (3 kids at the age 10 and under). The view over the river and the city from the balcony is beautiful - and we spent time at the balcony in the morning and the evening.
Communication and check-in was really easy, and António is a really friendly host that welcomes you, helps you get settled and then give you the best tips for getting around to Belem, the Oceanarium, etc.
Location is perfect. There is a supermarket at the end of the street, good bakery around the corner, easy to find a taxi, short walk to the metro, etc. We had a really nice stay and would love to come back.