Sebastião and João’s place is a great find. It's in a very handy location, close to transport and walking distance from various sights. There are also plenty of shops and restaurants nearby.
Sebastião and João were very friendly and helpful hosts, who made our stay very easy.
One issue I would mention is that it could be a bit noisy at night, when the restaurants were closing and bins were collected.
But it was still a charming apartment, and I'd recommend it.