Luis was a great host.
He started things off with a bang by picking us up from the train station so we could get to know one another.
His apartment was clean and spacious. The internet was reliable. The ACs worked great and offered a comfortable respite after hot days walking around Porto.
The apartment is on what Americans call the forth floor, and the stairs might be a little challenging for older folks.
Location is excellent and only a short walk to a large number of restaurants.
I would recommend to others visiting Lisbon.