Rui is ultra responsive and very helpful with anything inquired/required.
The apartment is perfectly located just away from the tourist hot spots but still very central and quiet.
As for the accommodation, to wishes were unfulfilled.
However, I like to point out two things: First, the lack of impact sound insulation, which can be annoying especially if you stay longer than a couple of days. Second, the humidity is problematic due to the place being subterranean, it is a bit damp, cold and dark but maybe in the heat of summer this is not an issue.