The apartment was very nicely sized, with a balcony and plenty of natural light throughout the day. it is ideally situated in a super quiet street, whilst being waking distance to landmark sites in Belém, and a short train ride away from the city center.
The flat was super clean and Joao was a really nice and responsive host.
A side note that the bedroom is separated from the living room by a glass + curtain and doesn't have a window (though it gets light from the living room), and the living room doesn't look exactly like in the pictures decoration wise.
anyhow, I'm giving it a 5 stars and would definitely stay again.