Henrique is a fantastic host, super responsive, friendly and eager to help without being invasive.
The apartment, location wise depends on what you want, it is definitely not in Lisbon center on the fancy new touristy areas, if you look for spot center area it is not that. On the other hand I find it quite great if you want to stay away from the hustle of the center and enjoy affordable delicious local food. This is a family, working class neighborhood, it has all the services but not much more and it is packed with great local taverns where you can eat fresh delicious food for a fraction of normal Lisbon prices.
Furthermore, you have the sea walk and all the big array of cultural centers from Belem and Alcántara at less than 20 minutes by foot.
The apartment itself is fine for an stay. We stayed for over two weeks while working and had no issues. Quite, good internet and all amenities. Some appliances are a bit too worn out but nothing major.