The host - Rui was an excellent host. He was patient in waiting for me despite my uncertain arrival time and me eventually arriving close to midnight. He was also prompt and responsive, so I knew I could always reach out to him and would get a response quite quickly, which was very reassuring.
The location - great location, very very near a metro station, so I didn't have to drag my luggage around too far. Felt like a safe and quiet neighbourhood. Not extremely close to the tourist sites along the river (about 20-30 mins walk), but very easy to get around by metro if I didn't want to walk (just a few stops away from Sao Bento station).
The apartment - clean, comfortable, cosy; felt like home.
I enjoyed my stay greatly and could not have asked for more. Would gladly return if I have the chance!