We didn't meet Rui but his friend Thiago was very friendly and welcomed us in Spanish. We were in touch with Rui who was very accommodating about the check-in and check-out.
The apartment is very spacious, clean and comfortable. The metro station is around the corner and there are restaurants, cafés and a grocery store open till late in the same street.
We also recommend the bakery in front of the building. Very nice staff!