Highly recommend!
Gonçalo was a fabulous host. When we realized that we had to take an overnight train to Lisbon (there are no day trains from Spain! Warning!) he was incredibly accommodating, leaving the keys at a nearby restaurant so we could get in early in the morning, and coming to meet us later. He gave us some great recommendations for places to eat, too. He was extremely communicative and made us very welcome during our brief stay.
The apartment itself is in a great location, really central to the tourist areas, on a not-too-steep street, and right around all the nightlife. Because the bedroom is secluded, we were able to close the door and have no noise. No AC, but the fans were sufficient.
Only downside is it's up 4 very steep flights of stairs, which were no problem for us but I could imagine might be an issue for some people.